SIM800L GPRS GSM Module Micro Sim Card Board + Antenna for Arduino
Features:
- Chip: SIM800L
- Voltage: 3.7 - 4.2V
- Support networks: Global Quad-band network
- Module size: 2.5 x 2.3cm
- TTL serial port for communication
- Power module automatically registers to your local cellular network
- Onboard signal lights flash slowly when there is a signal & it flashes quickly when there is no signal