SIM900A is a 900/1800MHz GSM/GPRS module with audio interface, UART interface and on-board microphone. It also contains an on-board switched mode power supply based on the LM2596 high-power DC-DC converter.
Specifications
- On-board SIM900A 900/1800 MHz GSM/GPRS module
- On-board LM2956 high-power DC-DC converter chip
- SIM card slot
- Input Voltage Range: 7.5 V to 12 V
- Audio interface
- On-board microphone
- UART interface
- On-board LED indicators for power, signal and incoming call
- PCB Size: 68.5 x 38.5 mm
