{"product_id":"gsm-gprs-sim900-shield-sms-calls","title":"GSM\/GPRS SIM900 Shield Module Send \u0026 Receive SMS Calls","description":"\u003cp\u003eGSM\/GPRS SIM900 Shield Module Send \u0026amp; Receive SMS Calls provides a complete cellular communication solution for development projects and embedded systems. The module supports sending and receiving SMS messages and making and receiving voice calls over GSM\/GPRS networks, making it suitable for remote control, alarm systems, telemetry devices, and tracking stations.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey specifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e• Network: GSM\/GPRS 850\/900\/1800\/1900 MHz.\u003cbr\u003e• Power supply: DC 3.4–4.4 V (nominal 4.0 V).\u003c\/p\u003e\n\u003cp\u003e• Power consumption:\u003cbr\u003e - Sleep mode: approximately 7 mA.\u003cbr\u003e - Active communication: approximately 220 mA, with peak currents up to 2.5 A.\u003c\/p\u003e\n\u003cp\u003e• Operating temperature: −40 to +85 °C.\u003c\/p\u003e\n\u003cp\u003e• Communication interfaces: UART with default settings 115200-8-N-1 for straightforward integration with microcontrollers and development boards.\u003c\/p\u003e\n\u003cp\u003e• Command support: standard AT commands (GSM 07.07, 07.05) plus extended AT command set for advanced control.\u003c\/p\u003e\n\u003cp\u003e• Messaging features: full SMS support with control and programming via AT commands.\u003c\/p\u003e\n\u003cp\u003e• Data and networking: built-in TCP\/IP stack and GPRS Class 10 support with CS-1 to CS-4 options for reliable and efficient data transfer.\u003c\/p\u003e\n\u003cp\u003e• Antenna options: SMA and IPEX connectors to attach external or internal GSM antennas depending on application requirements.\u003c\/p\u003e\n\u003cp\u003e• Audio and media: speaker and microphone inputs\/outputs to support voice calls and audio-capable applications.\u003c\/p\u003e\n\u003cp\u003eThe SIM900 shield is designed for easy UART integration with microcontrollers such as Arduino and similar platforms, offering flexible power and connectivity options for a wide range of embedded cellular applications.\u003c\/p\u003e","brand":"Electronic Service Center","offers":[{"title":"Default Title","offer_id":48950395470007,"sku":"99","price":95.0,"currency_code":"LYD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0639\/4010\/0279\/files\/IMG-2066.png?v=1784923354","url":"https:\/\/esclibya.com\/products\/gsm-gprs-sim900-shield-sms-calls","provider":"Electronic Service Center","version":"1.0","type":"link"}