EST Edwards M501MF Fire Alarm Mini Monitor Module
EST Edwards M501MF Fire Alarm Mini Monitor Module
Condition: Used
30 in stock
Storewide Quantity discount: Save 5% on 2 items, 8% on 3 items, and 10% on 4+ items (applies automatically at checkout).
Couldn't load pickup availability
You will be prompted to create an account or sign in to complete your purchase.
As an eBay Partner, we may be compensated if you make a purchase.
EST Edwards M501MF Fire Alarm Mini Monitor Module - This compact addressable device provides a reliable interface for monitoring normally open dry contact initiators in life-safety systems. - Operating voltage range of 15.2 to 19.9 VDC - Maximum standby current of 450 microamps - Alarm current draw of 550 microamps - Operating temperature capacity between 32°F and 120°F - Compact form factor designed for easy integration into standard electrical boxes
Compared to previous generations of monitor modules, the M501MF offers a significantly reduced physical footprint, facilitating installation in tight spaces where standard-sized components cannot fit. This unit upholds the industry-standard protocols required for modern addressable fire alarm networks, ensuring seamless compatibility and consistent data reporting during emergency events.
Advanced Circuitry and Reliability
The M501MF utilizes high-precision internal circuitry to ensure rapid response times when a connected contact is closed. By maintaining an extremely low power profile during standby, this module supports extended system capacity without compromising the stability or speed of the fire alarm loop communication.
This item description was generated using artificial intelligence and may contain errors. Specifications and compatibility should always be verified using official manufacturer documentation and, where applicable, by a qualified or licensed fire alarm technician.
View full details

About us
We specialize in new, used, and surplus fire alarm and life-safety equipment. Our inventory includes control panels, modules, power supplies, annunciators, detectors, and related accessories from leading manufacturers. Listings reflect current, in-stock availability and are updated regularly. Orders ship quickly and are packed with care.
For additional details, please review our Terms of Service, Shipping Policy and Refund Policy before placing your order. Please contact us with any questions.