SIM900A GPRS Module GSM Development Board Shield w/DTMF MMS Location
Features:
- SIM900A upgrade core chip
- 680uf SMD tantalum capacitor
- Anti-inference circuit: TVS tube
- IPEX, MMA connector
- Complete function: Call, messages, GPRS network communication, MMS, LBS, DTMF
- Size: 5*3.6cm(L*W)
- Power supply: VBTA 3.8-4.5V
- High compatibility: TTL level port UART 3.3V/5V
- STM32, 430, AVR singlechip drive
