SMALLEST SIM800L GPRS GSM MODULE MICROSIM CARD CORE BOARD QUAD-BAND TTL SERIAL PORT
Fr14,000 Fr12,000
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