{"product_id":"gsm-sim800c-modem-with-antenna","title":"GSM SIM800C Modem with Antenna","description":"\u003cmeta name=\"description\" content=\"Buy GSM SIM800C Modem with Antenna online in India at best price from The Tech Depot, Bengaluru. Authentic product, 7-day warranty on manufacturing defects, fast delivery across India.\"\u003e\n\n\u003ch1\u003eGSM SIM800C Modem with Antenna\u003c\/h1\u003e\n\n\u003cp\u003eThe GSM SIM800C Modem is a compact, quad-band cellular module that enables seamless 2G GSM\/GPRS connectivity for embedded systems and IoT applications. Electronics engineers, IoT developers, and embedded systems professionals use this modem to add remote communication capabilities to their projects without complex integration. It solves the critical challenge of enabling devices to transmit data, send SMS, and receive calls over GSM networks with minimal power consumption and footprint.\u003c\/p\u003e\n\n\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\u003cp\u003eThe SIM800C operates on GSM frequencies 850\/900\/1800\/1900 MHz, supporting both voice and data transmission through GPRS Class 10 connectivity. The module communicates via AT commands over UART serial interface, making it compatible with microcontrollers like Arduino, Raspberry Pi, and STM32 platforms. The integrated antenna connector and included external antenna provide robust signal reception in varied environmental conditions, while the module's low operating voltage (3.4V to 4.4V) and sleep modes make it ideal for battery-powered applications.\u003c\/p\u003e\n\n\u003cp\u003eWhat distinguishes the SIM800C is its proven reliability in industrial IoT deployments, remote monitoring systems, and M2M communication projects. The module features built-in TCP\/IP stack for HTTP\/HTTPS connectivity, email capability, and FTP support, eliminating the need for additional communication shields. Its compact 24x24mm footprint and minimal BOM integration reduce PCB real estate while maintaining excellent RF performance through the included ceramic antenna.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpecification\u003c\/td\u003e\n\u003ctd\u003eDetails\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eGSM\/GPRS Cellular Modem Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eSIM800C (Authentic)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eOriginal\/Authentic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e7 days on manufacturing defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping\u003c\/td\u003e\n\u003ctd\u003e1-5 days from Bengaluru\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDelivery\u003c\/td\u003e\n\u003ctd\u003e7-8 days across India\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupport\u003c\/td\u003e\n\u003ctd\u003e24\/7 via Email and WhatsApp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGSM Frequency Bands\u003c\/td\u003e\n\u003ctd\u003e850\/900\/1800\/1900 MHz Quad-Band\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eData Connectivity\u003c\/td\u003e\n\u003ctd\u003eGPRS Class 10 (up to 85.6 kbps)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterface\u003c\/td\u003e\n\u003ctd\u003eUART Serial (AT Command Compatible)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e3.4V to 4.4V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Consumption\u003c\/td\u003e\n\u003ctd\u003e1.5mA (Sleep Mode), 80mA (Idle), 500mA (TX Peak)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Dimensions\u003c\/td\u003e\n\u003ctd\u003e24 x 24 x 3 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAntenna Type\u003c\/td\u003e\n\u003ctd\u003eExternal Ceramic Antenna Included\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eQuad-Band GSM Support: Operates on 850\/900\/1800\/1900 MHz frequencies, ensuring global compatibility across Indian and international networks\u003c\/li\u003e\n\u003cli\u003eGPRS Data Connectivity: Class 10 GPRS support enables reliable data transmission at up to 85.6 kbps for IoT and remote monitoring applications\u003c\/li\u003e\n\u003cli\u003eBuilt-in TCP\/IP Stack: Native support for HTTP, HTTPS, FTP, and email protocols without external gateways or additional shields\u003c\/li\u003e\n\u003cli\u003eLow Power Architecture: Sleep mode consumes only 1.5mA, making it ideal for battery-powered remote devices and solar-powered systems\u003c\/li\u003e\n\u003cli\u003eAT Command Interface: Standard UART-based AT command set ensures easy integration with Arduino, Raspberry Pi, STM32, and custom microcontroller designs\u003c\/li\u003e\n\u003cli\u003eIncluded External Antenna: High-gain ceramic antenna optimizes signal reception in areas with weak GSM coverage\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eApplications and Use Cases\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eIoT Remote Monitoring: Deploy environmental sensors, temperature loggers, and water quality monitors in remote locations with real-time data transmission via GPRS to cloud platforms\u003c\/li\u003e\n\u003cli\u003eVehicle Tracking Systems: Integrate into GPS trackers and fleet management systems to enable location updates, SMS alerts, and two-way communication over GSM networks\u003c\/li\u003e\n\u003cli\u003eIndustrial Automation: Connect PLCs, industrial sensors, and machinery to centralized monitoring systems for predictive maintenance and real-time fault notifications\u003c\/li\u003e\n\u003cli\u003eSmart Agriculture: Monitor soil moisture, weather conditions, and irrigation systems in farms with automated SMS alerts and GPRS data logging to agricultural management software\u003c\/li\u003e\n\u003cli\u003eSecurity and Access Control: Enable alarm systems, door locks, and surveillance equipment to send SMS alerts and receive remote commands via GSM connectivity\u003c\/li\u003e\n\u003cli\u003eEnergy Metering: Integrate with smart meters and energy monitoring devices to transmit consumption data to utility servers for billing and load management\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow to Use\u003c\/h2\u003e\n\u003cp\u003eBegin by connecting the SIM800C module to your microcontroller via UART pins (TX, RX, GND, and VCC). Supply power between 3.4V and 4.4V through a regulated power supply capable of delivering 500mA peak current during transmission. Insert an active GSM SIM card (any Indian network: Jio, Airtel, Vodafone, BSNL) into the module's SIM card slot. Attach the provided external antenna to the antenna connector to optimize signal strength. Configure your microcontroller's serial communication at 115200 baud rate (default) and send AT commands to initialize the module: AT (test connection), AT+CPIN? (check SIM status), AT+CREG? (verify network registration), and AT+CGATT=1 (enable GPRS attachment).\u003c\/p\u003e\n\n\u003cp\u003eOnce the module registers on the GSM network (indicated by unsolicited +CREG responses), you can send SMS using AT+CMGS, make voice calls with ATD, establish GPRS connections for data transmission using AT+SAPBR and AT+HTTPINIT commands, or implement email functionality through AT+EMAILTO and related commands. For production deployments, implement error handling for network timeouts, implement retry logic for failed commands, and use the module's RTC (Real-Time Clock) for timestamping data. Monitor power consumption by enabling sleep modes (AT+CSCLK=1) during idle periods to extend battery life in remote applications.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs the SIM800C compatible with all Indian mobile networks?\u003c\/summary\u003e\n\u003cp\u003eYes, the SIM800C supports GSM frequencies 850\/900\/1800\/1900 MHz, which are utilized by all major Indian carriers including Jio, Airtel, Vodafone-Idea, and BSNL. However, Jio operates on 4G LTE only in most areas, so verify 2G GSM availability in your deployment location. For guaranteed connectivity, use Airtel, Vodafone, or BSNL SIM cards which maintain 2G GSM networks across India.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the maximum data transmission speed and range?\u003c\/summary\u003e\n\u003cp\u003eThe SIM800C supports GPRS Class 10 connectivity with theoretical maximum speed of 85.6 kbps. Practical speeds range from 30-60 kbps depending on network conditions and signal strength. Range extends to approximately 35 kilometers in open terrain with the included external antenna. In urban areas with building obstruction, effective range reduces to 5-15 kilometers. For applications requiring higher speeds, consider upgrading to 3G\/4G modules like SIM7600 or SIM7070.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I use this module for voice calls and SMS simultaneously?\u003c\/summary\u003e\n\u003cp\u003eThe SIM800C supports voice calls and SMS independently but not simultaneously. You can send SMS while idle, make voice calls when not transmitting data, or use GPRS for data transmission. The module automatically handles network switching between circuit-switched (voice\/SMS) and packet-switched (GPRS data) domains. For applications requiring simultaneous voice and data, implement queuing mechanisms in your firmware to manage sequential operations.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I optimize battery life in my IoT device?\u003c\/summary\u003e\n\u003cp\u003eEnable sleep mode using AT+CSCLK=1 command to reduce idle current from 80mA to 1.5mA. Implement periodic wake-up intervals using timers to check for incoming SMS or transmit buffered data. Use GPRS instead of voice calls for data transmission as it consumes less power. Disable unnecessary features like audio codec if only data transmission is needed. Consider using a real-time clock (RTC) to schedule transmissions during off-peak hours. With optimized firmware, battery-powered devices can operate for 6-12 months on standard lithium cells.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhen will I receive my order?\u003c\/summary\u003e\n\u003cp\u003eOrders are dispatched within 1-5 business days from our Bengaluru warehouse. Delivery takes 7-8 days to most locations across India.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is your return and warranty policy?\u003c\/summary\u003e\n\u003cp\u003eWe offer a 7-day return policy on manufacturing defects only. Contact support within 7 days of receipt for free replacement or full refund. Not applicable for user damage or misuse.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre bulk discounts available?\u003c\/summary\u003e\n\u003cp\u003eYes, wholesale pricing for orders of 10 or more units. Contact our sales team via WhatsApp or email for a customized bulk quote.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eWhy Buy from The Tech Depot\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine Products: Sourced directly from authorized distributors with authentication\u003c\/li\u003e\n\u003cli\u003eExpert Team: Our technical team validates every product before listing\u003c\/li\u003e\n\u003cli\u003eFast Shipping: Dispatched within 1-5 days from our Bengaluru warehouse\u003c\/li\u003e\n\u003cli\u003ePan-India Delivery: 7-8 days to Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata\u003c\/li\u003e\n\u003cli\u003ePayment Options: COD, UPI, credit\/debit cards, net banking, EMI available\u003c\/li\u003e\n\u003cli\u003eTechnical Support: 24\/7 expert guidance via email and WhatsApp\u003c\/li\u003e\n\u003cli\u003eReturns: 7-day return policy on manufacturing defects only\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eBuy GSM SIM800C Modem with Antenna Online in India\u003c\/h2\u003e\n\u003cp\u003ePurchase the \u003cstrong\u003eGSM SIM800C Modem with Antenna\u003c\/strong\u003e online at \u003ca href=\"https:\/\/thetechdepot.in\"\u003eThe Tech Depot\u003c\/a\u003e, India's trusted source for genuine electronics. We deliver across Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on \u003cstrong\u003eGSM SIM800C Modem with Antenna\u003c\/strong\u003e with fast shipping and expert support.\u003c\/p\u003e\n\u003cp\u003eOur team in Bengaluru is available 24\/7 to support your journey from product selection to project completion.\u003c\/p\u003e","brand":"The Tech Depot","offers":[{"title":"Default Title","offer_id":48744394064129,"sku":"TTD-11108","price":1026.31,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0819\/1577\/3185\/files\/dc2b292ac472bb94aec67f63cb6e13a7.jpg?v=1778073251","url":"https:\/\/techdepot.in\/products\/gsm-sim800c-modem-with-antenna","provider":"Tech Depot India","version":"1.0","type":"link"}