Data Sheet

Product Specification Sheet APS647 - Rev. 07/2013
VVDTMF DTMF to RS232 Decoder Board (for AlphaEntry™)VVDTMF DTMF to RS232 Decoder Board (for AlphaEntry™)
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Due to continuous product improvement, all colors, sizes, materials, finishes and specifications are subject to change without notice.
Architects' And Engineers'Architects' And Engineers'
SpecificationsSpecifications
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.
VVDTMF DTMF to RS232 Decoder BoardVVDTMF DTMF to RS232 Decoder Board
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.
FeaturesFeatures
Easily Installs Right on Finished Wall Surface
Operates on Safe Low-Voltage Class II Wiring
Convenient Screw Terminal and Plug-in Connections
Decodes all 16 DTMF tones (0-9, A-D, #, *)
RCA Audio input jack accepts line level audio input directly
Central office quality DTMF decoder IC
LED indicator shows when a tone is detected
DB9 female connector for RS232 hookup
SpecificationsSpecifications
Dimensions: 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