SIM900A Wireless GSM GPRS Module With Antenna

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.

Pin Description:

• when the level of communication of SIM900A and 3.3V TTL, this pin is connected to DC 3.3V.
  VCC5—-DC 5V input.
  VCC4——DC3.5–4.5 input
• Onboard Resources: Serial port circuit(with protection)
• Size:49mm x 47mm

Package Included:

• 1 X SIM900A Wireless GSM GPRS Module With Antenna