A6 Pro Serial GPRS GSM Module Core Developemnt Board

The board features compact size and low current consumption. With power saving technique, the current consumption is as low as 3mA in sleep mode. It communicates with microcontroller via UART port, supports command including GSM 07.07, GSM 07.05 and Ai-Thinker enhanced AT Commands. Features:   Working frequency: quad-band network, 850 / 900 / 1800 / 1900MHz Working voltage: 4.8-9VDC(On-board voltage regulator circuit supply power for A6 module) Working Current: maximum of 2A Sleep Current: 5mA Onboard Micro SIM card holder, you can install Micro SIM card Onboard Micro USB interface for external power supply Communication Interface: TTL serial port / RS232 serial port Baud rate: 115200bps and it can also be set by AT command. Interface logic voltage: 3.3V Make and answer phone calls using a headset and electret microphone. Send and receive SMS messages. Send and receive GPRS data (TCP/IP, HTTP, etc.) . Be used to test the Ai-Thinker GPRS A6 module Pin pitch: 2.54mm Onboard antenna interface: SMA and IPX About the Antenna:   Suitable for SIM800L GSM modules / Arduino SIM900 GPRS Shield Frequency: 780MHz ~ 960MHz 、1710MHz ~ 2170MHz Antenna gain: 2.0 ± 0.7 dBi @ 880 MHz, 2.0 ± 0.7 dBi @ 1800 MHz S.W.R <= 2.0 @ 2100 MHz ~ 2500 MHz Output Impedance: 50 Ohm Antenna interface: SMA