Product Specification Sheet APS075

Rev. 08/2013

PK314A and PK311 Amplifier/Power Supplies

This Specsheet is for a product which is discontinued. Please contact us for alternative products.
  • 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
Architects' And Engineers' Specifications
The VM104 system power supply/amplifier shall be Alpha Communications® / TekTone model PK314A, or approved equal. Amplifier shall operate from a 16VAC (160VA) U.L. Listed power transformer (model SS250). Where required, contractor shall furnish and install the necessary PK311 booster power supply unit(s) and transformer(s). All wiring to power supply/amplifier(s) shall be low-voltage Class II wiring, installed as per all federal, state, and local electrical codes. Power supply/amplifier(s) shall surface mount right to the finished wall and shall be installed in a suitable environment that is free from excessive dirt, dust, temperature, humidity, grease and water. Power supply/amplifier shall provide the intercom amplification, video power and signaling power for proper system operation. Power supply/amplifier(s) shall be installed a safe distance from any source of electrical or other interference, or wiring.
PK314A and PK311 Amplifier/Power Supplies
The Alpha Communications® / TekTone PK314A and PK311 amplifier/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 units.

These PK314A and PK311 amplifier/power supplies are designed to easily surface mount right onto the finished wall by means of customer supplied screws . Connections are positive screw terminal type.

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 SS250).

Height: 14.63" (372mm)
Width: 2.38" (61mm) x 
Depth: 2.25" (58mm) from mounting surface
Rugged Extruded Aluminum Case
Call Tone: 
Integrated circuit oscillator
Positive screw terminal connections. Should be installed within 50 feet of transformer(s). 
Temperature Range: 
0-50 degrees C.
Surface-mounted (within 50 feet of transformer(s))
Power Requirement: 
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.

Alpha Communications
42 Central Drive • Farmingdale • NY • 11735-1202 • Phone: (631) 777-5500 • Fax: (631) 777-5599
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Due to continuous product improvement, all colors, sizes, materials, finishes and specifications are subject to change without notice.