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Smallest SIM800L GPRS GSM Module MicroSIM Card Core BOard Quad-band TTL Port
Chip: SIM800L;Voltage: 3.7-4.2V;Module size: 2.5cmx2.3cm
Support networks: China Mobile, China Unicom and global quad-band network
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
Package Included: 1 x Smallest SIM800L GPRS GSM Module MicroSIM Card Core BOard Quad-band TTL Port