SIM800L GPRS GSM ultra small module

Description

Module models: SIM800L (latest module, performance than SIM900 / M590)
Operating voltage: 3.7 ~ 4.2 V (peak current is 1A)
Support network: China mobile, China unicom and four frequency network around the world
Module size: 2.5 x 2.3cm
TTL serial port, can directly link to MCU. Don’t need a MAX232
Power on automatic startup, automatic search network
Onboard one channel indicator light (with signal slow flash, no signal quickly flash)