SIM800L GSM GPRS Module for Arduino ( GSM GPRS Serial Modem Shield )

Chip: SIM800L Voltage: 3.7-4.2V (datasheet = 3.4-4.4V) Freq : QuadBand 850/900/1800/1900Mhz Module size: 2.5cmx2.3cm Transmitting power Class 4 (2W) at GSM 850 and EGSM 900 Class 1 (1W) at DCS 1800 and PCS 1900GPRS connectivity GPRS multi-slot class 12 default GPRS multi-slot class 1~12 (option) Temperature range Normal operation: 40C ~ +85C 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 Full Datasheet silahkan download link berikut : Datasheets Lengkap Module SIM800L (Google Drive/Dani) Library dan Sample Project bisa di download di : http://arjunoproject.blogspot.co.id/2016/05/sim800l-gsmgprs-module-to-arduino.html