System Sensor M500DM Dual Monitor Module Intelligent Addressable Fire Alarm

**Condition:** Used / Removed from Service. Unit is in clean condition with a clear, fully legible factory label. Sold exactly as pictured, ready for field installation or facility maintenance backup.

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### Product Overview

The System Sensor M500DM is an intelligent, addressable dual monitor module designed for two-wire multiplex systems. It provides two independent, two-wire initiating device circuits (IDCs) at two separate, consecutive addresses, allowing it to efficiently monitor normally open contact fire alarm, supervisory, or security devices.

### Specifications & Features

* **Brand:** System Sensor

* **Model No:** M500DM

* **Type:** Dual Monitor Module / Dual Input Addressable Module

* **Maximum Installation Temperature:** 120°F (49°C)

* **Country of Manufacture:** Made in the U.S.A.

* **Certifications:** UL Listed (Signaling Device Issue No. AR-7528), FM Approved

### Terminal Assignments (Power Limited Circuits)

* **Terminals 1 & 2:** SLC (-) and SLC (+) Loop Connectivity

* **Terminals 6 & 7:** SUP L (-) and SUP L (+) Supervisory Line

* **Terminals 8 & 9:** SUP H (-) and SUP H (+) Supervisory Line

* **Terminals 0, 3, 4, 5:** Unused

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### Shipping & Handling

* Professional packaging ensures the module is fully protected against static and impact during transit.

* Fast, reliable shipping with tracking details updated immediately upon dispatch.