{"title":"Communication Modules (GSM\/4G)","description":"\u003cp\u003eBuild connected IoT and M2M projects with Wirelays \u003cstrong\u003eGSM, GPRS, and 4G LTE communication modules\u003c\/strong\u003e. We stock genuine, tested modules with breakout boards, antennas, and documentation — everything you need to add cellular connectivity to your embedded design.\u003c\/p\u003e\u003cp\u003eOur bestselling \u003cstrong\u003eSIM800C module\u003c\/strong\u003e handles voice calls, SMS, and GPRS data over 2G networks — ideal for remote monitoring, alert systems, and legacy M2M deployments. For high-speed data and VoLTE on modern 4G networks, the \u003cstrong\u003eA7670C\u003c\/strong\u003e and \u003cstrong\u003eA7672S 4G LTE modules\u003c\/strong\u003e offer reliable connectivity with AT command compatibility, TTL serial interfaces, and onboard SIM holders.\u003c\/p\u003e\u003cp\u003eSpecialised modules in this collection:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSIM800C GSM\/GPRS\u003c\/strong\u003e — quad-band 2G, voice + SMS + data, TTL serial\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA7670C \/ A7672S 4G LTE\u003c\/strong\u003e — Cat-1 LTE, SMS, TCP\/HTTP, Arduino-compatible\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMC60 GPS + GSM\u003c\/strong\u003e — combined cellular and GNSS positioning in one module\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eESP32 + GSM boards\u003c\/strong\u003e — WiFi, Bluetooth, and cellular on a single development board\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eEvery module communicates via standard AT commands over a TTL serial interface, making integration straightforward with Arduino, ESP32, Raspberry Pi, and custom microcontroller boards. Ideal for \u003cstrong\u003eGSM modules for IoT\u003c\/strong\u003e projects including weather stations, tank level monitors, and security alert systems. All products ship across India with technical support from Wirelays.\u003c\/p\u003e","products":[{"product_id":"raivens-sim800c-gprs-module-gsm-module-core-board-quad-band-ttl-serial-port-with-the-antenna","title":"RAIVENS SIM800C GPRS MODULE GSM Module Core Board Quad-band TTL Serial Port with the antenna","description":"\u003cp data-mce-fragment=\"1\"\u003eSIM800C GSM GPRS module is a miniature GSM modem, which can be integrated into a great number of IoT projects. You can use this module to accomplish almost anything a normal cell phone can; SMS text messages, make or receive phone calls, connecting to the internet through GPRS, TCP\/IP, and more! To top it off, the module supports quad-band GSM\/GPRS network, meaning it works pretty much anywhere in the world.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThe Sim800C GPRSGSM Shield with Antenna provides you with a way to use the GSM phone network to receive data from a remote location，and it is compatible with all boards which have the same form factor (and pinout) as a standard Arduino Board. This shield can also be applied to DIY phones for calling, receiving and sending messages, making GPS trackers or other applications like Smart home, etc.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eSIM800C GPRSGSM Shield delivers GSMGPRS85090018001900MHz signals for Audio, SMS and GPRS Service. Also, it runs at the low power consumption of about 0.6mA in sleep mode but acts compliant to GSM phase 22+ Class 4 (2 W @850 900 MHz), Class 1 (1 W @ 18001900MHz) with a two-in-one headset jack.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eWhat’s more, to make your project more flexible and efficient, we have prepared two different antennas for you. One is the traditional GPRS antenna which is more sensitive while another one is an onboard antenna which is more compact and easy to install.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThe main drawback of this module is working on 3.7 to 4.2 volts so you cannot power it directly through Arduino or Raspberry Pi. Moreover, the sim800C GSM and GPRS module require up to 2 amperes current so accordingly, design your power supply. You can use a 3.7-volt lipo battery to directly power the GSM module.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eFeatures\u003cbr data-mce-fragment=\"1\"\u003eQuad-Band 850 900 1800 1900 MHz\u003cbr data-mce-fragment=\"1\"\u003eGPRS multi-slot class 1012\u003cbr data-mce-fragment=\"1\"\u003eGPRS mobile station class B\u003cbr data-mce-fragment=\"1\"\u003eCompliant to GSM phase 22+\u003cbr data-mce-fragment=\"1\"\u003eOnboard Provision for Mic and Speaker.\u003cbr data-mce-fragment=\"1\"\u003eSpecifications\u003cbr data-mce-fragment=\"1\"\u003eChip used QUAD BAND SIM800C GSM CHIP.\u003cbr data-mce-fragment=\"1\"\u003eArduino compatibility Arduino UNO R3, Arduino Mega etc.\u003cbr data-mce-fragment=\"1\"\u003eAntenna type finger antenna.\u003cbr data-mce-fragment=\"1\"\u003eOutput TTL and RS232 serial output.\u003cbr data-mce-fragment=\"1\"\u003eSimcard holder standard size.\u003cbr data-mce-fragment=\"1\"\u003eBuzzer for CALL and SMS indication.\u003cbr data-mce-fragment=\"1\"\u003eIndication LEDs\u003cbr data-mce-fragment=\"1\"\u003ePWR – Power Indication\u003cbr data-mce-fragment=\"1\"\u003eSTS – Status Indication\u003cbr data-mce-fragment=\"1\"\u003eNTW – Network Indication\u003cbr data-mce-fragment=\"1\"\u003ePINOUTS\u003cbr data-mce-fragment=\"1\"\u003eo2 – RX\u003cbr data-mce-fragment=\"1\"\u003eo3 – TX\u003cbr data-mce-fragment=\"1\"\u003eProvision for the headphone jack, mic, and speaker.\u003cbr data-mce-fragment=\"1\"\u003ePackage Includes\u003cbr data-mce-fragment=\"1\"\u003e1 x Sim800C GPRSGSM Shield with Antenna.\u003c\/p\u003e","brand":"wirelays.coom","offers":[{"title":"Default Title","offer_id":45025934639389,"sku":"","price":575.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0762\/4245\/2765\/files\/Untitleddesign_84f36723-54ba-4fec-921c-d3dfbfe3ff3c.png?v=1687084989"},{"product_id":"raivens-sim800c-gsm-gprs-module-ufl-connector","title":"RAIVENS SIM800C GSM GPRS Module – Quad-Band TTL Board with UFL Antenna Connector","description":"\u003ch2\u003eRAIVENS SIM800C GSM GPRS Module – Compact Quad-Band Board with UFL Antenna Connector\u003c\/h2\u003e\u003cp\u003eBuild IoT, M2M, and communication projects with the \u003cstrong\u003eRAIVENS SIM800C GSM\/GPRS Module\u003c\/strong\u003e. This compact board integrates the powerful SIM800C chip with a \u003cstrong\u003eUFL antenna connector\u003c\/strong\u003e for flexible antenna placement — ideal for embedded systems, custom enclosures, and projects requiring external antenna mounting.\u003c\/p\u003e\u003cp\u003eCompatible with \u003cstrong\u003eArduino, Raspberry Pi, ESP32\u003c\/strong\u003e, and any microcontroller with UART\/TTL serial interface.\u003c\/p\u003e\u003chr\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuad-Band GSM\/GPRS:\u003c\/strong\u003e Works worldwide on 850\/900\/1800\/1900 MHz bands.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUFL Antenna Connector:\u003c\/strong\u003e Flexible external antenna option — place the antenna where signal is strongest.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTTL Serial Interface:\u003c\/strong\u003e Direct connection to microcontrollers via UART (TX\/RX) at 3.3V-4.2V logic.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoice, SMS and Data:\u003c\/strong\u003e Make\/receive calls, send\/receive SMS, and connect via GPRS data.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGPRS Class 12:\u003c\/strong\u003e Multi-slot connectivity for reliable data transfer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact Form Factor:\u003c\/strong\u003e Small board footprint, easy to integrate into any project.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLED Indicators:\u003c\/strong\u003e Power (PWR), Status (STS), and Network (NTW) LEDs for quick diagnostics.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard SIM Slot:\u003c\/strong\u003e Accepts standard-size SIM cards.\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChipset\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSIM800C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFrequency Bands\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eQuad-Band: 850\/900\/1800\/1900 MHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGPRS\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eClass 12, Multi-slot\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInterface\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTTL UART Serial (TX\/RX)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAntenna\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUFL connector (external antenna)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3.7V - 4.2V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePeak Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 2A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSIM Card\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eStandard size SIM slot\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProtocols\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTCP\/IP, HTTP, FTP, MUX, SMS, Voice\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAT Commands\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eStandard GSM 07.07\/07.05 AT commands\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003chr\u003e\u003ch3\u003eWhat is in the Box\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e1x RAIVENS SIM800C GSM\/GPRS Module Board\u003c\/li\u003e\n\u003cli\u003e1x UFL Antenna (if included with variant)\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eIdeal For\u003c\/h3\u003e\u003cp\u003eIoT Projects, M2M Communication, Remote Monitoring, Arduino and Raspberry Pi Projects, SMS Alert Systems, GPS Trackers, Security Systems, Smart Agriculture, Industrial Automation\u003c\/p\u003e\u003chr\u003e\u003ch3\u003eHow to Use\u003c\/h3\u003e\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower:\u003c\/strong\u003e Supply 3.7-4.2V DC (LiPo battery recommended) with 2A capacity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnect:\u003c\/strong\u003e Wire TX\/RX pins to your microcontroller's UART interface.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert SIM:\u003c\/strong\u003e Place a standard SIM card into the slot.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCommunicate:\u003c\/strong\u003e Send AT commands via serial to make calls, send SMS, or connect via GPRS.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"RAIVENS","offers":[{"title":"Default Title","offer_id":45025935229213,"sku":"10","price":700.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0762\/4245\/2765\/files\/Untitleddesign.png?v=1687084556"},{"product_id":"sim800c-32m-gsm-module-ic-with-32m-flash","title":"SIM800C 32M GSM Module IC with 32M Flash","description":"\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003e32M Bits Internal Flash\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eQuad Band GSM Module 850\/900\/1800\/1900Mh\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eSupports Call, SMS, GPRS, Bluetooth 3.0\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eSMT 42pin Package\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eLow Power Consumptions\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eWorks with AT Commands\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eWide Number of Communication Protcols including USART, USB, etc.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv aria-labelledby=\"tab-title-description\" role=\"tabpanel\" id=\"tab-description\" class=\"mf-Tabs-panel mf-Tabs-panel--description panel entry-content\"\u003e\n\u003ch3 class=\"tab-title\"\u003eDescription\u003c\/h3\u003e\n\u003cdiv class=\"tab-content-wrapper\"\u003e\n\u003cp\u003eSIM800C 32M GSM Module from SIMCOM is one of the best and widely used chip for adding the facility of GSM \/ GPRS along with Bluetooth 3.0 to any of your electronics devices. It comes in SMT package with 42pins. The SIM800C GSM Module is also having a huge presence in commercial as well as hobby electronics. The SIM800C 32M GSM Module provides with various I\/O in a fairly small compact size of 17.6 x 15.7 x 2.3 mm. The device is also vastly used in battery powered applications due to its low power consumption.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e32MBits Internal Flash (Usable flash will vary according to firmware version)\u003c\/li\u003e\n\u003cli\u003eQuad Band GSM Module 850\/900\/1800\/1900Mhz\u003c\/li\u003e\n\u003cli\u003eGPRS Multi-Slot Class 12\/10\u003c\/li\u003e\n\u003cli\u003eGPRS Mobile Station Class B\u003c\/li\u003e\n\u003cli\u003eSupports Call, SMS, Internet, Bluetooth.\u003c\/li\u003e\n\u003cli\u003eBluetooth 3.0 + EDR\u003c\/li\u003e\n\u003cli\u003eControl via AT Command (3GPP TS27.007, 27.005)\u003c\/li\u003e\n\u003cli\u003eLow Power Consumption\u003c\/li\u003e\n\u003cli\u003eSupply Voltage Range: 3.4~4.4V DC\u003c\/li\u003e\n\u003cli\u003eCurrent Consumption: Peak 2A\u003c\/li\u003e\n\u003cli\u003eSoftware Features:\n\u003cul\u003e\n\u003cli\u003eFTP\/HTTP\u003c\/li\u003e\n\u003cli\u003eMMS\u003c\/li\u003e\n\u003cli\u003eEmail\u003c\/li\u003e\n\u003cli\u003eDTMF Detection\u003c\/li\u003e\n\u003cli\u003eJamming Detection\u003c\/li\u003e\n\u003cli\u003eInterference Detection\u003c\/li\u003e\n\u003cli\u003ePlay recorded voice in call\u003c\/li\u003e\n\u003cli\u003eSSL\u003c\/li\u003e\n\u003cli\u003eBluetooth\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv aria-labelledby=\"tab-title-additional_information\" role=\"tabpanel\" id=\"tab-additional_information\" class=\"mf-Tabs-panel mf-Tabs-panel--additional_information panel entry-content\"\u003e\n\u003ch3 class=\"tab-title\"\u003eSpecification\u003c\/h3\u003e\n\u003cdiv class=\"tab-content-wrapper\"\u003e\n\u003ctable class=\"woocommerce-product-attributes shop_attributes\"\u003e\n\u003ctbody\u003e\n\u003ctr class=\"woocommerce-product-attributes-item woocommerce-product-attributes-item--weight\"\u003e\n\u003cth class=\"woocommerce-product-attributes-item__label\"\u003eWeight\u003c\/th\u003e\n\u003ctd class=\"woocommerce-product-attributes-item__value\"\u003e4 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"woocommerce-product-attributes-item woocommerce-product-attributes-item--dimensions\"\u003e\n\u003cth class=\"woocommerce-product-attributes-item__label\"\u003eDimensions\u003c\/th\u003e\n\u003ctd class=\"woocommerce-product-attributes-item__value\"\u003e1.76 × 1.57 × 0.23 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"wirelays.com","offers":[{"title":"Default Title","offer_id":45596950790429,"sku":"","price":450.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0762\/4245\/2765\/files\/download_1_97e387d7-bde3-48b5-bdf4-d25bbe6ae059.jpg?v=1690447964"},{"product_id":"shutter-sensor-pcb","title":"ESP32 GSM SIM800C Development Board with WiFi, Bluetooth \u0026 GPRS IoT Module","description":"\u003cp\u003eElevate your IoT projects with our cutting-edge ESP32 GSM SIM800C Development Board featuring a convenient Push SIM Card Holder. This versatile board seamlessly combines the robust power of the ESP32 microcontroller with the reliable SIM800C GSM\/GPRS module, offering integrated WiFi and Bluetooth connectivity alongside global cellular support. Designed for makers, developers, and professionals, it enables effortless SMS messaging, voice calls, and data transmission over quad-band GSM frequencies (850\/900\/1800\/1900MHz).\u003c\/p\u003e\n\u003cp\u003eKey features include:\u003cbr\u003e• \u003cstrong\u003eIntegrated Connectivity:\u003c\/strong\u003e Enjoy simultaneous WiFi, Bluetooth, and GSM\/GPRS support for versatile IoT applications such as remote monitoring, smart home automation, and industrial control.\u003cbr\u003e• \u003cstrong\u003ePush SIM Card Holder:\u003c\/strong\u003e The innovative push SIM card slot design simplifies SIM installation, reducing setup time and ensuring secure card placement without extra tools.\u003cbr\u003e• \u003cstrong\u003eGlobal Coverage:\u003c\/strong\u003e With quad-band GSM support, this board is engineered for worldwide cellular connectivity, making it ideal for projects across different regions.\u003cbr\u003e• \u003cstrong\u003ePowerful ESP32 Chip:\u003c\/strong\u003e Built on the high-performance ESP32 platform, it delivers fast processing, low power consumption, and supports multiple programming environments including the Arduino IDE.\u003cbr\u003e• \u003cstrong\u003eVersatile Applications:\u003c\/strong\u003e Whether for sending SMS alerts, managing remote sensors, or controlling devices via voice commands, this development board is your go-to solution for creating reliable and cost-effective wireless IoT systems.\u003c\/p\u003e\n\u003cp\u003eExpand your development horizons with a compact yet powerful board that is perfect for rapid prototyping and scalable deployment. Enjoy a seamless integration of multiple wireless protocols in one solution, paving the way for innovative projects in home automation, industrial applications, and beyond.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKeywords:\u003c\/strong\u003e\u003cbr\u003eESP32, GSM, SIM800C, Development Board, Push SIM Card Holder, IoT Module, WiFi, Bluetooth, GPRS, Cellular Connectivity, Quad-band GSM, Remote Monitoring, Smart Home Automation, Arduino Compatible, Wireless Communication, SMS, Voice, Data Transmission\u003c\/p\u003e","brand":"wirelays.com","offers":[{"title":"Default Title","offer_id":46634156589341,"sku":"5","price":1700.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0762\/4245\/2765\/files\/0001_1.png?v=1695452759"},{"product_id":"sim-a7672s-4g-2g-lte-development-board-without-gnss-4g-development-board-sim-a7672s-development-board-4g-module","title":"SIM A7672S 4G + 2G LTE Development Board – Without GNSS | 4G development Board | SIM A7672S Development Board | 4G Module","description":"\u003cul\u003e\n\u003cli\u003e\n\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0762\/4245\/2765\/files\/Screenshot_2025-03-12_114454.jpg?v=1741760108\"\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0762\/4245\/2765\/files\/WhatsApp_Image_2024-11-23_at_2.58.12_PM.jpg?v=1732354618\"\u003eInput Supply: 5V-12V DC\u003c\/li\u003e\n\u003cli\u003eDATA Transfer LTE(Mbps): 10 Downlink \/ 5 Uplink\u003c\/li\u003e\n\u003cli\u003ePower consumption: 300mA; \u0026lt;10mA (sleep mode)\u003c\/li\u003e\n\u003cli\u003eSIM Holder: Micro SIM\u003c\/li\u003e\n\u003cli\u003eESD protection for Antenna and Power Supply\u003c\/li\u003e\n\u003cli\u003eSIMcom A7672S 4G LTE chip on-board\u003c\/li\u003e\n\u003cli\u003eSupports 4G + 2G\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 class=\"tab-title\"\u003eDescription\u003c\/h3\u003e\n\u003cdiv class=\"tab-content-wrapper\"\u003e\n\u003cp\u003eThe SIM A7672S 4G + 2G LTE Development Board is a Cat 1 module which supports wireless communication modes of LTE-TDD\/LTE-FDD\/GSM\/GPRS\/EDGE. This A7672S Module has support for 2G Fallback. Hence, if 4G Network is not available, than this module will automatically switch to 2G for all operations. This module does not support GNSS.\u003c\/p\u003e\n\u003cp\u003eIt supports maximum 10Mbps downlink rate and 5Mbps uplink rate It supports maximum 10Mbps downlink rate and 5Mbps uplink rate. This board features a serial interface and is based on the SIMCOM A7670C LTE modem. The serial interface allows for simple communication with a computer or laptop via a USB to Serial adapter or TTL converter. AT instructions are used to communicate with the A7672S.\u003c\/p\u003e\n\u003cp\u003eThe SIM A7672S 4G + 2G LTE Development Board is designed keeping in mind the requirements of the user. It has various pinouts from the module, such as RING – used to detect incoming call, DTR – to use the 4G Module in ultra low power sleep mode, STATUS – to detect the status of 4G Module, NETLIGHT – in case developer wants to use external LED to indicate network status, RESET – developer can use this pin to connect with MCU and reset the module if required.\u003c\/p\u003e\n\u003cp\u003eApart from this, the module also has pinouts for connection of Speaker, Microphone, and PWM.\u003c\/p\u003e\n\u003cp\u003eThis SIM A7672S 4G + 2G LTE Development Board has onboard UART Logic Level Conversion, and Vdd needs to be connected to host reference voltage. It has a UFL connector, which allows connection of any antenna with this board. Apart from this, the module is very compact in size. It can be easily embedded in any customized PCB (Eagle library available in Downloads), and it can also be mounted using screws.\u003c\/p\u003e\n\u003cp\u003eThis module has sleep mode power consumption of \u0026lt;10mA, allowing the board to be powered by a small Li-ion Battery. MIC29302WU is used to step down the input voltage, which effectively allows input voltage as low as 5V.\u003c\/p\u003e\n\u003cp\u003eThe SIM A7672S 4G + 2G LTE Development Board supports multiple built-in network protocols like HTTP, HTTPS, FTP, FTPS etc., supports drivers for main operation systems (USB driver for Windows, Linux and Android etc.) and software function, AT commands are compatible withSIM7500\/SIM7600 series modules.\u003c\/p\u003e\n\u003ch4\u003eNote: Warranty claims are not entertained for short-circuited boards.\u003c\/h4\u003e\n\u003ch4\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eSuitable for LTE networks\u003c\/li\u003e\n\u003cli\u003eSupports LTE-FDD, LTE-TDD and GSM frequency bands.\u003c\/li\u003e\n\u003cli\u003eControl via AT commands.\u003c\/li\u003e\n\u003cli\u003eMicro SIM Card Holder.\u003c\/li\u003e\n\u003cli\u003eIn-built TTS (Text-to-speech) Support.\u003c\/li\u003e\n\u003cli\u003ePower LED and Network Status LED\u003c\/li\u003e\n\u003cli\u003ePowerful TCP\/IP protocol stack for internet data transfer.\u003c\/li\u003e\n\u003cli\u003eSupports maximum 10Mbps downlink rate and 5Mbps uplink rate.\u003c\/li\u003e\n\u003cli\u003eAbundant software functions: FOTA, LBS, SSL\u003c\/li\u003e\n\u003cli\u003eU.FL male connector for external antenna\u003c\/li\u003e\n\u003cli\u003eOn board UART logic level conversion\u003c\/li\u003e\n\u003cli\u003eSupported Band: LTE-FDD B1\/B3\/B5\/B8 , LTE-TDD B34\/B38\/B39\/B40\/B41 and GSM\/GPRS\/EDGE 900\/1800MHz\u003c\/li\u003e\n\u003cli\u003eOn board pins for RING, NETLIGHT, STATUS, DTR(DTE ready) and Reset\u003c\/li\u003e\n\u003cli\u003eOnboard pins for Speaker and Microphone\u003c\/li\u003e\n\u003cli\u003eUltra low sleep mode current consumption: \u0026lt;10mA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv aria-labelledby=\"tab-title-description\" role=\"tabpanel\" id=\"tab-description\" class=\"mf-Tabs-panel mf-Tabs-panel--description panel entry-content\"\u003e\n\u003cdiv class=\"tab-content-wrapper\"\u003e\n\u003ch4\u003e\u003cstrong\u003eKnown Issues\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eJio SIM Cards – which are used in 5G mode once do not work with SIMCOM A7672S Chip as of now. Resolution from SIMCOM is awaited.\u003c\/li\u003e\n\u003cli\u003eSIM Cards from all other carriers work normally.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv aria-labelledby=\"tab-title-additional_information\" role=\"tabpanel\" id=\"tab-additional_information\" class=\"mf-Tabs-panel mf-Tabs-panel--additional_information panel entry-content\"\u003e\n\u003ch3 class=\"tab-title\"\u003eSpecification\u003c\/h3\u003e\n\u003cdiv class=\"tab-content-wrapper\"\u003e\n\u003ctable class=\"woocommerce-product-attributes shop_attributes\"\u003e\n\u003ctbody\u003e\n\u003ctr class=\"woocommerce-product-attributes-item woocommerce-product-attributes-item--weight\"\u003e\n\u003cth class=\"woocommerce-product-attributes-item__label\"\u003eWeight\u003c\/th\u003e\n\u003ctd class=\"woocommerce-product-attributes-item__value\"\u003e29.5 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv aria-labelledby=\"tab-title-download\" role=\"tabpanel\" id=\"tab-download\" class=\"mf-Tabs-panel mf-Tabs-panel--download panel entry-content\"\u003e\n\u003ch3 class=\"tab-title\"\u003eDownload\u003c\/h3\u003e\n\u003cdiv class=\"tab-content-wrapper\"\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e\u003ca href=\"https:\/\/www.ktron.in\/wp-content\/uploads\/2023\/03\/A7672S_Spec-1.pdf\"\u003eA7672S_Spec\u003c\/a\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e\u003ca href=\"https:\/\/www.ktron.in\/wp-content\/uploads\/2023\/03\/A7672S_Hardware_Design_V1.00-1.pdf\"\u003eSIM A7672S 4G + 2G LTE Development Board\u003c\/a\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e\u003ca href=\"https:\/\/www.ktron.in\/wp-content\/uploads\/2023\/03\/A76XX-Series_AT_Command_Manual_V1.06-4.pdf\"\u003eA76XX Series_AT_Command_Manual_V1.06\u003c\/a\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e\u003ca href=\"https:\/\/www.ktron.in\/wp-content\/uploads\/2023\/03\/4G-module-Eagle-Library.zip\"\u003e4G module Eagle Library\u003c\/a\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"wirelays.com","offers":[{"title":"Default Title","offer_id":48274354962717,"sku":"","price":1279.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0762\/4245\/2765\/files\/c0f03444-33b7-42ec-8f4e-ebf4b2a4cc05.png?v=1716027196"},{"product_id":"sim-a7670c-4g-lte-development-board","title":"SIM A7670C 4G LTE Development Board – Cat-1 Module Without GNSS | IoT \u0026 M2M Communication","description":"\u003ch2\u003eSIM A7670C 4G LTE Development Board – High-Speed Cat-1 Connectivity for Modern IoT Projects\u003c\/h2\u003e\u003cp\u003eMove beyond 2G. The \u003cstrong\u003eSIM A7670C 4G LTE Development Board\u003c\/strong\u003e brings \u003cstrong\u003eCat-1 LTE connectivity\u003c\/strong\u003e to your IoT, M2M, and embedded projects. With 4G speeds and broad band support, this board is future-proof — perfect as 2G\/3G networks are being phased out across India and globally.\u003c\/p\u003e\u003cp\u003eIdeal for applications requiring reliable, always-on cellular data: remote monitoring, asset tracking, industrial automation, and more.\u003c\/p\u003e\u003chr\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e4G LTE Cat-1:\u003c\/strong\u003e Fast, reliable cellular connectivity with LTE Cat-1 speeds (up to 10 Mbps downlink).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMulti-Band Support:\u003c\/strong\u003e Works with major carriers in India and worldwide — Jio, Airtel, Vi, BSNL compatible.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWithout GNSS:\u003c\/strong\u003e Streamlined design without GPS for cost-effective data-only applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoice, SMS and Data:\u003c\/strong\u003e Full support for voice calls, SMS messaging, and high-speed data transfer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUART Interface:\u003c\/strong\u003e Easy serial communication with Arduino, ESP32, Raspberry Pi, and other microcontrollers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUSB Interface:\u003c\/strong\u003e On-board USB for firmware updates, debugging, and direct PC communication.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact Design:\u003c\/strong\u003e Development-board form factor with clearly labeled pins and easy prototyping.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2G Fallback:\u003c\/strong\u003e Automatic fallback to GSM\/GPRS when 4G is unavailable for maximum coverage.\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChipset\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSIMCOM A7670C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNetwork\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLTE Cat-1 \/ GSM (4G with 2G fallback)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLTE Bands\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eB1\/B3\/B5\/B8 (India compatible)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eData Speed\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCat-1: DL 10 Mbps \/ UL 5 Mbps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGNSS\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNot included (data\/voice variant)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInterface\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUART TTL + USB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3.3V - 4.2V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSIM Card\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNano\/Micro SIM (check board variant)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProtocols\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTCP\/IP, HTTP, HTTPS, FTP, MQTT, SSL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAT Commands\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eStandard 3GPP AT command set\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003chr\u003e\u003ch3\u003eWhat is in the Box\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e1x SIM A7670C 4G LTE Development Board\u003c\/li\u003e\n\u003cli\u003e1x LTE Antenna\u003c\/li\u003e\n\u003cli\u003ePin headers (if applicable)\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eIdeal For\u003c\/h3\u003e\u003cp\u003e4G IoT Projects, Remote Monitoring Systems, Asset Tracking (without GPS), Industrial Automation, Smart Agriculture, POS Terminals, Digital Signage, Vending Machines, Environmental Monitoring, M2M Gateways\u003c\/p\u003e\u003chr\u003e\u003ch3\u003eHow to Use\u003c\/h3\u003e\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower:\u003c\/strong\u003e Supply 3.3-4.2V DC or use USB power.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert SIM:\u003c\/strong\u003e Place a 4G-enabled SIM card (Jio\/Airtel\/Vi\/BSNL) into the slot.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnect:\u003c\/strong\u003e Wire UART TX\/RX to your microcontroller, or connect via USB to PC.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCommunicate:\u003c\/strong\u003e Send AT commands to establish data connections, send SMS, or make voice calls over 4G.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Wirelays","offers":[{"title":"Default Title","offer_id":48390586597661,"sku":null,"price":1139.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0762\/4245\/2765\/files\/d1287505-38af-49c2-bbd8-c2703c5a0ef7.png?v=1716014326"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0762\/4245\/2765\/collections\/05-communication-modules.png?v=1776003252","url":"https:\/\/wirelays.com\/collections\/communication-modules.oembed","provider":"wirelays.com","version":"1.0","type":"link"}