System Sensor M500M is a 500 Series intelligent monitor module that gives contact devices such as waterflow switches, pull stations and security contacts their own address on the signaling line circuit. The address is set with rotary code switches, and a panel controlled LED shows status.
Besides the supervised state of the monitored device (normal, open or short), the module sends the full analog supervision measurement back to the panel, so impedance changes in the monitored loop can be detected. The M500M is capable of Class A supervision, and conventional 4-wire smoke detectors can be monitored through their alarm and trouble contacts.
Specifications
| Operating voltage |
15 to 32 VDC |
| Standby current |
400 µA max. at 24 VDC with 47k EOL; 600 µA max. with EOL under 1k |
| LED current |
5.5 mA (LED latched on) |
| End-of-line resistance |
47 kΩ (included) |
| Loop impedance |
40 Ω max. |
| Temperature range |
32 °F to 120 °F (0 °C to 49 °C) |
| Humidity |
10% to 93% non-condensing |
| Dimensions |
4.275 in. W x 4.675 in. H x 1.4 in. D |
| Shipping weight |
6.3 oz (196 g) |
Installation notes
- Mounts in a standard 4 in. x 4 in. x 2-1/8 in. junction box.
- SEMS screws make wiring easier.
- Address with the rotary switches before installation.
Related models
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M501M: mini monitor module, Class B, fits behind devices
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M500DM: dual input monitor module, two Class B circuits
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M500S: supervised control module
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M500R: relay module with two Form C contacts
Documents
FAQ
Can the M500M supervise a Class A circuit?
Yes. The M500M is capable of Class A supervision, while the M501M and M500DM are Class B only.
Can it monitor conventional 4-wire smoke detectors?
Yes. Conventional 4-wire smoke detectors can be monitored through their alarm and trouble contacts, wired as an initiating loop to the module.
Is the end-of-line resistor included?
Yes, a 47 kΩ end-of-line resistor is included.
What box does it mount in?
A standard 4 in. x 4 in. x 2-1/8 in. junction box.
