This SIM900A wireless 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
- The onboard two set power supply interface VCC5 5V power supply, VCC4 interface, 3.5–4.5V power supply, optional power on self starting (default) and control start.
- The onboard SMA (default) and IPX mini antenna interface, SIM900A interface reserved reset.
- Computer 5V power supply can be early computer USB.
- Control pin all leads.
- A TTL level, compatible with 3.3V and 5V.
- One way of speech interface, the way Mike interface.
- when the level of communication of SIM900A and 3.3V TTL, this pin is connected to DC 3.3V.
VCC5—-DC 5V input.
- Onboard Resources: Serial port circuit(with protection)
- Size:49mm x 47mm
- 1 X SIM900A Wireless GSM GPRS Module With Antenna
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