System Sensor M500X fault isolator modules enable part of the communications loop to continue operating when a short circuit occurs on it. An LED indicator blinks in the normal condition as well as turns on during a short circuit condition. In addition, the module will automatically restore the entire communications loop to the normal condition when the short circuit is removed.
In fact, the System Sensor M500X modules mount directly to 4˝ square electrical boxes. Besides, the box must have a minimum depth of 21/8″. Besides, To ensure proper operation, these modules shall be connected to listed compatible system control panels only. Also, The number of devices that may be install between fault isolator modules will vary based on the types of devices being isolate. Contact the fire alarm control panel manufacturer for the isolator load ratings of individual devices.
Features / Specifications
- Normal Operating Voltage: 15 – 32 VDC
- Stand-by Current: 450 µA (not isolating)
- Maximum Current Draw: 17mA (device in isolation)
- Temperature Range: 32°F to 120°F (0°C to 49 °C)
- Humidity: 10 to 93% Non-condensing
- Dimensions: 41/2″ H × 4″ W × 1/4″ D (Mounts to a 4″ square by 21/8″ deep box)



