Model #: PK427A
Spec Sheet Preview: The Alpha Communications® PK427A specialty relays are used for a variety of reasons. The PK427A can  be connected to a standard 16VAC electric door  opener output from many intercom amplifiers to allow  connection to a magnetic or different type or voltage  door opener. It can also be used to provide two (2)  independent 'Form C' relay contacts from virtually any  16VAC input source. The PK427A can even be powered directly from a 16VAC transformer.  As long as a 16VAC source is present, the PK427A will  engage, providing two …
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HAS (2) 10 Amp FORM 'C' RELAYS
Outside Dimensions:
4.50"W x 3.20"H x 0.75"D
(114mm W x 81mm H x 19mm D)

Manuals & Diagrams

System-Specific Information

OPEN-VOICE (loud-speaking) Type Apartment Intercoms

See system Installation Manual: AWD143 for more complete wiring information.

OPEN-VOICE (loud-speaking) Home/Office Entry Intercoms

For a standard 4-wire system: Apartment riser wiring shall be 3-common #22AWG and 1 selective wire #22AWG, for each station connected to the riser cable. Add 1-#22AWG common wire if 2nd tone signal will be used with optional apartment push-buttons, to signal apartments when visitor is at apartment door.

See system Installation Manual: AWD143 for more complete wiring information.

Architects & Engineer's Specs

The specialty relay assembly shall be Alpha Communications® PK427A or equivalent. Relay shall operate from a 16VAC primary voltage source, and shall provide two (2) independent 'Form C' dry contact relay outputs, as long as the 16VAC source is present. All wiring to relay shall be low-voltage Class II wiring, installed as per all federal, state, and local electrical codes. Relay 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.

Contractor shall observe all local and national electrical and building codes.

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Alpha Communications®
42 Central Drive  |  Farmingdale, NY 11735-1202
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