SimCom SIM900A GSM Module with SMA Antenna PIR Sensor Motion-activated functions

Motion-activated functions

and open-collector output

Fast control response

Header one on the left side of the board

SimCom SIM900A GSM Module with SMA Antenna PIR Sensor Motion-activated functionsSimCom SIM900A GSM Module with SMA Antenna The SIM900A Modem is a wireless module manufactured by SIMCOM. It is a Dual Band GSM modem operating on the 900MHz frequencies. The modem has the capability to automatically search for these two bands. Additionally, users can also manually set the frequency bands using AT Commands. The baud rate of the modem can be configured in the range of 1200 115200 through AT commands. The SIM900A Modem is designed to be