SIM800C TTL GSM Modem

Product ID: 1129

SIM800C TTL GSM Modem

Product ID: 1129 Power Supply = 4V DC 2A. On Board Power and Network Indication LED Micro SIM Card Holder SMA Antenna (Optional) Works with standard AT Commands. Interfacing Pins: 1) MIC (MICP, MICN) = Differential Signal Pins. 2) Speaker (SPKP. SPKN) = Differential Signal Pins. 3) BT_A = Bluetooth Antenna External pin (Works only if the firmware in updated) 4) ADC = Analog to Digital Input pin 5) STAT = Status Signal Pin 6) RI = Ring indicator 7) UART Pins: DTR, DCD, CTS, RTS, RXD, TXD. 8) make sure to use TTL Level Converter for RX and TX of the microcontroller interface.