Rev. 3 - 10/08
PK314A and PK311
The Alpha Communications®/Tektone PK314A and PK311 ampli-
fier/power supplies are used with the VM104 series video-intercom
systems, to provide intercom amplification, power to operate the
electric door opener(s) etc., and power to operate the video monitor
These PK314A and PK311amplifier/power supplies are designed to
easily surface mount right onto the finished wall by means of
customer supplied screws . Connections are positive screw terminal
Each VM104 system must have one (1) PK314A which powers up
to the first 50 (or less) video-intercom monitor/handset stations on a
system. For each additional 80 (or less) video-intercom monitor/
handset stations, use one (1) model PK311 booster power supply.
Each PK314A and each PK311 requires a separate 16VAC (160VA)
low-voltage Class II power transformer for power (our model
• Easily Installs Right on Finished Wall Surface
• Operates on Safe Low-Voltage Class II Wiring
• Positive Screw Terminal Connections
• Built-in Call Tone Signal Generator
Height: 14.63" (372mm)
Width: 2.38" (61mm)
Depth: 2.25" (58mm) from mounting
Rugged Extruded Aluminum Case
Integrated circuit oscillator
Positive screw terminal connections. Should
be installed within 50 feet of transformer(s).
0-50 degrees C.
Surface-mounted (within 50 feet of
16 VAC, 160VA (each PK314A & PK311)
Note: Specifications are the minimum requirement for
system operation. Some systems may require additional
equipment. Contact your factory representative.
ARCHITECTS' AND ENGINEERS'
The VM104 system power supply/amplifier shall be Alpha Commu-
nications®/Tektone model PK314A, or approved equal. Amplifier
shall operate from a 16VAC (160VA) U.L. Listed power transformer
(model SS250). Where required, contractor