Product Specification Sheet APS007

Rev. 07/2013

IS774 Apartment Intercom Station

This Specsheet is for a product which is discontinued. Please contact us for alternative products.
IS774 Apartment Intercom Station
Architects' And Engineers' Specifications

The apartment station shall be Alpha Communications® Model IS774 or approved equal and shall be large enough to cover the area occupied by the previous intercom unit. Momentary action push-buttons shall be provided for TALK, LISTEN and DOOR functions. Button markings shall be in black lettering right on the faceplate, and shall include graphic symbols.

The speaker/microphone shall be a 3.50" (89mm) highsensitivity type with excellent voice-frequency and tone signalling response. Screw terminal connections shall be provided and required wiring shall be only three (3) common wires and one (1) selective. (Add 1-common wire for systems with individual apt. door push-buttons that need to tone through the IS774 stations).

System Operation

The caller, by pressing the appropriate button on the entrance panel, shall cause an electronic call tone to be heard in the apartment station. The tenant responds by pushing the TALK button while speaking to caller, LISTEN button while waiting for reply, and the DOOR button to allow entry to the building.

IS774 Apartment Intercom Station

The Alpha Communications® IS774 apartment intercom stations are designed specifically to cover existing oversized apartment intercom back boxes.

The reduced wiring requirement permits using the existing wiring (if electrically sound), while the advanced electronic design permits use in any size building. A wide variety of optional accessories is available to provide additional functions such as multi-entrance operation, post office door release, silent or delayed door release, etc. Stations are also available in custom sizes and wiring configurations.


  • Simple push button operation
  • Easy Installation
  • Automatic Privacy
  • Clear Voice Fidelity using high quality 3.5" voice speaker
  • Rugged and Reliable
  • Simple to Operate
  • Large station size neatly covers existing wall openings
  • Requires only 3-common and 1-selective wire (add 1 common wire when apt. door tone signalling is required)
Options / Componenets
5.50"W (140mm) x 12.50"H (318mm) x 0.25"D (7mm).


Steel faceplate with painted White powder coat finish.


3.50" square (89mm), 45 ohms, (Model SK013). Designed for crystal-clear voice and tone signal response.

Push Buttons:

Individually replaceable push-buttons with self-wiping plated contacts. Identified TALK, LISTEN and DOOR, with graphic symbols.

Alpha Communications
42 Central Drive • Farmingdale • NY • 11735-1202 • Phone: (631) 777-5500 • Fax: (631) 777-5599
TOLL-FREE: (800) 666-4800 • Web: • Email:
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Due to continuous product improvement, all colors, sizes, materials, finishes and specifications are subject to change without notice.