GSM MODEM SIM900

Product Description

Features: Dual band (900MHz/1800MHz) GSM/GPRS Modem with very advance SIM900/Sim900A GSM module. The modem follows plug and play operation with on board RS232 interface for communication and follows standard AT command set.

Technical Specifications:

Supply power: DC 9V to 12V (DC 9V typical) NOTE: Recommended power supply DC 9V/3A

Onboard Features:

1.    Onboard Power ON & Network indicator LED

2.    Onboard indicator LED & buzzer for incoming message & call indication

3.    Onboard provision to select the power on of SIM900A (either automatic or manual) using the jumper with onboard switch for manual POWER-ON.   

4.    Onboard DB9 connector for connecting modem directly to computers serial port.

5.    3 pin male header (TTL) interface for connecting SIM900 directly with microcontroller.

6.    Onboard Audio (speaker and microphone) interface pins.

7.    Onboard PWM and ADC channels(SIM900A PWM and ADC PINS)