Air200T development board GSM / GPRS module

specification:
The main chip: RDA8851BL
Network Type: GSM / GPRS
Support spectrum: GSM850 / GSM900MHz DCS1800 / PCS1900
Support Interface: UART, GPIO, 12C
Support SIM card type: 1.8V / 3.0V
Transmit power: GSM850 / GSM900 33dBm
DCS1800 / PCS1900 30dBm
Sensitivity: better than 108dBm
antenna:
Peripheral interface:
39Pins (Punching Method) Scope of Supply: 3.4v-4.2v
Temperature characteristics:
Operating temperature: -40 ℃ -85 ℃
Storage temperature: -45 ℃ -90 ℃