{"title":"SIM900 Module - 4 Frequency","handle":"sim900-module-4-frequency","url":"/products/sim900-module-4-frequency","description":"The SIM900 is an ultra-compact and reliable quad-band GSM/GPRS module in an SMT package. Built around a powerful single-chip processor with an ARM926EJ-S core, it delivers voice, SMS, data, and fax capabilities in a tiny 24 × 24 × 3 mm form factor weighing just 3.4 g.\n\nOperating across the 850/900/1800/1900 MHz bands, the SIM900 is ideal for M2M applications where space and power efficiency are critical. It supports embedded TCP/UDP, FTP/HTTP, MMS, and multiplexing protocols, and is controlled via standard AT commands.\n\nKey Features\n\n\nQuad-Band GSM/GPRS – 850/900/1800/1900 MHz coverage\n\nUltra-Compact Size – Just 24 × 24 × 3 mm and 3.4 g\n\nLow Power Consumption – 1.5 mA in sleep mode\n\nWide Supply Voltage – 3.1 V to 4.8 V input range\n\nExtended Temperature Range – Operates from −40 °C to +85 °C\n\nAT Command Control – GSM 07.07, 07.05, and SIMCom enhanced AT commands\n\nSIM Application Toolkit – Supports 3 V and 1.8 V SIM cards\n\nEmbedded Networking – TCP/UDP, FTP, HTTP, and MMS protocols built in\n\nGPRS Class 10 – Up to 85.6 kbps downlink with coding schemes CS 1–4\n\nVoice Support – Half rate, full rate, enhanced full rate, and AMR codecs with echo suppression\n\n\nInterfaces\n\n\nSerial Interface – Primary communication with host MCU\n\nSPI – Optional serial peripheral interface\n\nI2C, GPIO, PWM, ADC – Flexible peripheral connectivity\n\nAnalog Audio – For voice applications and hands-free operation\n\nAntenna Pad – External antenna connection\n\nRTC Backup – Real-time clock with battery backup support\n\n\nData & SMS Specifications\n\nGPRS multi-slot class 10/8, mobile station class B\nCSD up to 14.4 kbps, USSD, non-transparent mode, PPP stack\nPBCCH support\nSMS point-to-point (MO/MT) and cell broadcast\nText and PDU mode\nFax Group 3, Class 1\n\n\nGSM Power Class\n\n\nClass 4 – 2 W at 850/900 MHz\n\nClass 1 – 1 W at 1800/1900 MHz\n\n\nCertifications\n\nCE, FCC, ROHS, PTCRB, GCF, IC, ICASA, TA, REACH, AT&T\n\n\nIdeal For\n\nIoT and M2M communication projects\nRemote monitoring and telemetry systems\nGPS tracking devices with cellular connectivity\nSMS-based alert and notification systems\nEmbedded systems requiring voice or data over GSM\n\n\nPackage Contents\n\n1× SIM900 GSM/GPRS Module (SMT)\n","vendor":"Elecrow","product_type":"physical","in_stock":true,"options":[],"variants":[{"id":3545,"title":"Default Title","sku":"EC-WGS49001G","price":34.82,"on_sale":false,"in_stock":true,"available_quantity":100,"option1":"Default Title"}]}