GSM-900 GSM/GPRS module is a readily available GSM/GPRS module, which can provide the network connectivity to your project. It can do all the work your mobile phone would do like making a call, receive a call, send a message, connect to the internet using GPRS. You can even connect a microphone and speaker to it and converse on your phone calls. SIM900A GSM Module is a dual-band GSM/GPRS engine that works on frequencies EGSM 900MHz and DCS 1800MHz. SIM900A features GPRS multi-slot class 10/ class 8 (optional) and supports the GPRS coding schemes CS-1, CS-2, CS-3 and CS-4. This module can be used in your IoT based projects and embedded systems. This is used in Automobiles, robotics, servers, etc. Specifications Standard AT commands Item Weight: 4.54 g Package Dimensions: 12.1 x 10.6 x 0.2 cm Adjustable serial baud-rate from 1200 to 115200 bps Single supply voltage: 3.4V – 4.5V Power saving mode: Typical power consumption in SLEEP mode is 1.5mA Frequency bands: SIM900A Dual-band: EGSM900, DCS1800. The SIM900A can search the two frequency bands automatically. The frequency bands also can be set by AT command. GSM class: Small MS GPRS connectivity: GPRS multi-slot class 10 (default) , GPRS multi-slot class 8 (option) Transmitting power: Class 4 (2W) at EGSM 900, Class 1 (1W) at DCS 1800 Operating Temperature:- 30ºC to 80ºC Storage Temperature:- 5ºC to 90ºC
