Platinum Tools

PK-543A Multi-Housing Intercom Amplifier Can Replace Most Major Brands

PK-543A Multi-Housing Intercom Amplifier Can Replace Most Major Brands of Apartment Intercom Amplifiers for 3-wire, 4-wire or 5-wire hook-up.

The PK-543A apartment intercom amplifier by Lee Dan Communications of Hauppauge, N.Y., is a self-contained audio and access control system designed for use with 3-wire, 4-wire and 5-wire apartment intercom stations. The PK-543A provides amplification of two-way audio as well as door control. The unit includes the necessary power circuits required to operate a complete apartment intercom system.


The PK-543A features volume and tone controls for audio output adjustments at both the main directory and inside apartment stations. Additional functionality includes multiple entrance operation, relay control of door strikes and electromagnetic locks, three selectable door timing modes, a post-office door lock release, both steady and warble call tones, and more.

PK-543A can also replace most other major brands.

Featured Product

ELK Products -C1M1 Dual-Path Alarm Communicators with Remote Services

ELK Products -C1M1 Dual-Path Alarm Communicators with Remote Services

C1M1 offers a truly significant reduction in transmission time in comparison to other communicators that rely on dial capture or data bus decoding. This can result in quicker response time to emergency situations which could save lives and assets. By providing both IP and cellular pathways, C1M1 provides the reliability installers are looking for in an alarm communicator. C1M1 eliminates port forwarding and extra fees for remote access. Installers can remotely upload/download programming changes to M1 controls over IP or cellular using ElkRP2. Consumers can control the M1 remotely via the free ElkLink mobile app and web portal, as well as eKeypad and M1 Touch Pro apps. Other IP-based software and interface partners can connect to the M1 control over the local network through C1M1. C1M1 also provides email/text notifications for arm, disarm, and alarm events. ELK-C1M14GSM supports GSM (AT&T/T-Mobile) networks and ELK-C1M1CDMA supports CDMA (Verizon) networks.