Module SIM800L is a GSM/GPRS communication module in the M5Stack stackable module series. It integrates the SIM800L and GSM/GPRS internally, and is only compatible with 2G networks. If you want to add a cellular module to your design for voice, text, and SMS functionality, the Module SIM800L is a great choice.
Features
3.5 mm audio jack
Microphone (the microphone is disabled by default, users need to solder a 0-ohm resistor on MIC-EN to enable it)
Power supply voltage range: 3.8V - 4.2V
Recommended power supply voltage: 4V
Power consumption:
Sleep mode < 2.0mA
Idle mode < 7.0mA
GSM transmission (average): 350 mA
GSM transmission (peak): 2000mA
Module size: 25 x 23 mm
Communication interface: UART (maximum 2.8V) and AT commands
SIM card socket type: microSIM (bottom)
Supported frequency bands: Quad-band (850/950/1800 / 1900 MHz)
