Featuring the brands of RATH and JANUS

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Aftermarket System

LMA / LMA-NC

Compliant with

CSA B44 ASME 17.1 (2019/2022)

See code information

Overview

The JANUS® LMA / LMA-NC continuously monitors elevator emergency communication systems to verify end-to-end communication and detect phone line failures. Designed for aftermarket elevator applications, this device provides audible and visual notification when communication is interrupted, helping building personnel quickly identify and resolve issues before they impact emergency communication.

Available in flush mount and behind-the-panel configurations, it integrates easily into existing elevator systems while supporting dependable communication monitoring. A keyed reset switch allows alarms to be silenced during service, and flexible power options simplify installation in a variety of elevator environments.

Communication Monitoring

Continuously monitors elevator emergency phone lines.
Verifies end-to-end communication.
Detects communication failures and phone line loss.
Supports dependable elevator emergency communication.

Alarm Notification

Audible and visual alarms notify building personnel.
Keyed reset switch silences alarms during service.
Improves visibility of communication system status.
Helps identify communication issues before emergencies occur.

Installation Options

Available in flush mount and behind-the-panel models.
Flexible power options support retrofit applications.
Optional backup power accessories available.
Designed for aftermarket elevator installations.

Reliable Operation

Operates from 110 VAC or 12–24 VDC.
Simple wiring using a single pair of 18–24 AWG conductors.
Wide operating temperature range supports demanding environments.
Designed for dependable long-term operation.

Product Variants

LMA	LMA-NC
Flush Mount	Behind-the-Panel

Files and Resources

All Data Sheets Install Guides Specifications

LMA and LMA-NC_Line Monitor Alert Manual

Install Guides

Datasheet_Elevator Comms Failure_LMA_LMA-NC

Data Sheets

RATH Elevator Communication Failure Specifications

Specifications

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LMA / LMA-NC

Product Variants

Files and Resources

Education, Training & Support

Education

FAQs

Technical Support

Contact Sales

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