SIM800L GPRS GSM Module MicroSIM Card Core Board Quad-band TTL Serial Port 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 Read more about SIM800L GPRS GSM Module MicroSIM Card Core Board Quad-band TTL Serial Port[…]