SIM800L GPRS adapter board GSM module microSIM card Core board with antenna

Information address: https://pan.baidu.com/s/1887wcI9x-XqFO4LpBl3PcA

The default is not welding pin, to the customer to reserve a larger expansion space

Module model: SIM800L (new module, performance exceeds SIM900/M590)

Working voltage: 3.7~4.2V (current 1A, please handle)

Support network: China Mobile, China Unicom and global quad-band 

Module size: 2.5cm x 2.3cm

Serial port for the TTL serial port, can be directly linked with the microcontroller. No need for MAX232

The module is powered on and automatically starts up, and automatically searches for the net-work.

Onboard signal indicator light (with slow signal flash, no signal flash)

Small size, there is no GSM module smaller than this module