SIM800L GPRS GSM modulo scheda micro SIM scheda quad-band porta seriale TTL Arduino
SIM800L GPRS GSM Module Smallest Card Board Quad-band Onboard TTL Port 3.7-4.2V. Chip: SIM800L. No need MAX232. Power module automatically boot, homing network. Module size: 2.5cmx2.3cm. Onboard signal lights all the way.