Smallest SIM800L GPRS GSM Module Micro SIM Card Core BOard Quad-band TTL Serial Port
Product description: SIM800L GPRS GSM Module Micro SIM Card Core BOard, Quad-band TTL Serial Port
SIM800L GSM GPRS Module Board MicroSIM Transfer Card Core Board
Feature: 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)