GSM SIM800L MODULE TTL serial port for serial port, you can link directly to the microcontroller. No need MAX232 , Power module automatically boot, homing network , On board signal lights all the way . It flashes slowly when there is a signal, it flashes quickly when there is no signal. It is brand new, good quality and high performance
Features:
- Chip : SIM800L
- Voltage : DC 3.7-4.2V(1A current peak)
- Support networks : Quad-band network
- Module size : 2.5cmx2.5cm
