Alpha VVDTMF DTMF to RS232 Decoder Board

The Alpha VVDTMF DTMF to RS232 Decoder Board converts telephone DTMF tones into RS-232 data signals. It requires a VV100D input and a 7-24VDC power supply for operation. This board features a female DB9 connector for COM port connection and includes two alarm inputs and two alarm outputs.

It supports decoding all 16 DTMF tones (0-9, A-D, #, *). The RCA audio jack accepts line-level signals directly. An LED indicator displays when tones are detected. The board is designed for surface mounting using the included screw holes and plastic standoffs. Connections use positive terminal blocks for ease of installation.