Smallest Sim800l GPRS GSM Module Microsim Card Core Board Quad-band TTL Serial Port for Arduino

Description:

• 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