SIM808 GSM/GPRS/GPS modulis

Power supply: 5-26V
When the power supply is less than 9V, needs 2A DC
Another channel power supply port is 3.5-4.2V, suitable lithium battery
Computer debugging USB - TTL
1 channel TTL serial port, can switch GPS and GSM function
Can realize GPS positioning, messaging, data and other functions, the average standby at 80MA
Power consumption is about 10MA
With voice and microphone interface
Quad Band, globally available

1 channel GPS antenna interface, SMA interface for connecting an active antenna (default), you can also access the passive antenna
1 channel GSM antenna interface, SMA interface
1 channel Bluetooth antenna interface, SMA interface
1 channel voice interface, 1 channel mic interface
1 channel efficient LDO power supply, input voltage is 5-26V. Note that when the input voltage is less than 9V, please ensure that the power supply can provide current 2A. Another channel power supply input port 3.5-4.2V (suitable for lithium battery)
1 channel TTL level interface, perfectly compatible with 5V, 3.3V, 2.85V level system
1 channel USB interface, allows easy updates to SIM808
Important chip pin all leads out

The module basic through the serial port to send AT commands to achieve control, use this module only requires a power supply and a serial port.