M500M MONITOR MODULE TWO-WIRE – SYSTEM SENSOR

The System Sensor M500M Monitor Module provides reliable two-wire monitoring for fire alarms, supervisory devices, and security equipment. This fault-tolerant initiating circuit supports normally open contact devices and accommodates both normally open and normally closed security devices. Designed for intelligent two-wire systems, the M500M features built-in rotary decade switches for individual module addressing. Install with confidence in any fire alarm control system requiring dependable contact monitoring and device supervision.