Rev. 2 - 12/07
ARCHITECTS' AND ENGINEERS'
The 24-input RS232 Decoder Board(s) shall be
Alpha Communications® IN024A or equivalent.
The IN024A shall be activated by capturing the
voltage(s) generated by contact closures or volt-
ages generated, and sending the proper RS232
data to a PC which is running VisitorVerifier™ or
AlphaEntry™ (or other) Alpha Communications®
The contractor shall also furnish and install the
required KE-PWR/5A (5VDC) power supply,
MTA100-13-12 wiring harness cable and RS232
cable to connect the IN024A to the PC's serial
input port (or USB port with the proper adaptor).
All wiring to relay shall be low-voltage Class II
wiring, installed as per all federal, state, and local
electrical and building codes.
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42 Central Drive • Farmingdale NY 11735-1202 • Phone (631) 777-5500 • Fax (631) 777-5599
TOLL-FREE 1-800-666-4800 • Web: www.AlphaCommunications.com • Email: firstname.lastname@example.org
The Alpha Communications® IN024A 24-input
Decoder Boards are used for a variety of applica-
tions. The primary use is for capturing up to 24
voltage (or dry contact) inputs from an entry inter-
com or call station (or up to 144 when used in a matrix
configuration with some additional components), and
sending the proper RS232 data to a PC which is
running VisitorVerifier™ or AlphaEntry™ (or other)
Alpha Communications® software.
The IN024A 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
• Easily Installs Right on Finished Wall Surface
• Operates on Safe Low-Voltage Class II Wiring
• RS-232 port to accept serial data or send serial data
based on inputs.
• Convenient Screw Terminal and Plug-in Connections
• Program up to 12 x 12 matrix, based on application. Pins
not used as Rows or C