The DTMF to RS232 Decoder Board(s) shall be Alpha Communications® VVDTMF or equivalent. The VVDTMF shall be activated by capturing the DTMF tones generated by a telephone entry type master station and sending the proper RS232 data to a PC which is running AlphaEntry™ (or other) Alpha Communications® software.
The contractor shall also furnish and install the required VV100D input board, 12VDC power supply, and RS232 cable to connect the VVDTMF to the PC's serial input port (or USB port with the proper adapter).
All wiring to relay shall be low-voltage Class II wiring, installed as per all federal, state, and local electrical and building codes.
The Alpha Communications® VVDTMF DTMF to RS232 Decoder Boards are used for a variety of applications. The primary use is for capturing the DTMF tones generated by a telephone entry type master station and sending the proper RS232 data to a PC which is running AlphaEntry™ (or other) Alpha Communications® software. The VVDTMF is powered from the (required) VV100D input board.
The VVDTMF boards are designed to easily surface mount right onto the finished wall by using the mounting holes provided for screw mounting, along with the provided plastic stand-offs.
Connections are positive screw terminal and plug-in type.
||3.00"W (77mm) x 1.375"H (35mm) x .75"D (20mm).|
|Connections:||Screw Terminal and Plug-in Connectors|
|Power Required:||12VDC, provided by the model VV100D Input Board|