Description
SIM800L GPRS GSM Module MicroSIM Card Core Wireless Board Quad-band TTL Serial Port With Antenna SIM800
Chip: SIM800L
Voltage: 3.7-4.2V
Support networks: China Mobile, China Unicom and global quad-band network
Module size: 2.5cmx2.3cm
TTL serial port for serial port, you can link directly to the microcontroller. No need MAX232
Power module automatically boot, homing network
Onboard signal lights all the way . It flashes slowly when there is a signal,
it flashes quickly when there is no signal