Innovations in Communications™ Since 1955

155 Adams Avenue, Hauppauge, New York, 11788-3699 USA
Phone: 800-231-1414 or 631-231-1414 Fax: 631-231-1498 E-Mail:
Other Apartment Intercom Stations
IR-423 3-Wire

Oversized 3 Wire
Stainless Steel
Apartment Intercom Stations


IR-423 is a 3 wire oversized apartment station which is an economical replacement stations for old Auth ‘777’ and ‘811’ installations. Although not circuitry compatible, they are oversized to cover the old Auth wall cutouts, and fit existing back boxes.

System Operation:
The visitor, by pressing the appropriate button on the entrance panel, causes an electronic tone signal to be heard at the IR-423. The resident responds by pushing the TALK button while speaking to the caller, the LISTEN button while waiting for a reply, and the DOOR button to allow entry to the building.

Save money - installation is quick, easy, attractive, and eliminates the need for plastering and painting over the old hole.



Available Upgrades

Architects' & Engineers' Specifications:
Suite stations shall be LEE DAN® model IR-423 or approved equal and shall be large enough to cover the area occupied by the previous intercom. Momentary action pushbuttons shall be provided for TALK, LISTEN, and DOOR operations. The speaker/microphone shall be a 3 1/2", 45 Ohm, 1 Watt, heavy duty magnet, high sensitivity type with voice-frequency response. Speaker and buttons shall be field serviceable. Glued-in-place components will not be acceptable.



Size: 12 1/2"H, 5 1/2"W, 1 1/2"D. Projects only 1/2" from mounting surface.

Controls: Individually replaceable Talk, Listen and Door Release buttons with self-wiping, plated contacts. Buttons are protected by 3/8" thick solid aluminum engraved plungers.

Finish: 20 Gauge Stainless Steel

Holes: 2 Mounting holes, 10 1/2" on center.

Screws: Includes 2 SC-1 tamper resistant mounting screws.

Amplifier: Use Lee Dan model PK-543A.

Speaker: 3 1/2", 1 Watt, 45 Ohm, SK-004 Heavy duty magnet with voice-frequency response. Also used for tone signal from lobby panel.

Speaker Baffle: Metal speaker baffle.


 It is always advisable to run spares!

IR-423 = 3 Wires. Use 1 twisted pair, plus 1 selective #22 gauge.


Since 1955, LEE DAN® has manufactured standard, modified and custom intercom systems for hundreds of thousands of homes, condos, co-ops, apartments, and commercial users. We take great interest in the special security needs of our customers, and great pride in the quality of our products!

Call LEE DAN® customer service department toll-free for more information.

With continuous product improvement, sizes and other specifications are subject to change without notice.

| Brochure | Doc | Spec Sheet | User Guide | Manual | Wiring |

This page was last updated June 6, 2016

 Phone: 800-231-1414 or 631-231-1414   Fax: 631-231-1498 E-Mail:

© 2001-2019 Lee Dan Communications, Inc., All rights reserved.