Description The HM201-SC Addressable Short Circuit Isolator Module is designed to ensure uninterrupted operation of addressable fire alarm communication loops in the event of a short circuit. It automatically isolates the affected section of the loop, allowing the remaining system to continue functioning normally. When a short circuit condition occurs, the module activates an LED indicator to provide clear visual status. Once the fault is cleared, the HM201-SC automatically restores the entire communication loop to normal operation without manual intervention. Engineered for reliable performance, the HM201-SC enhances system resilience and safety. It must be used with compatible addressable fire alarm control panels and is suitable for a wide range of commercial and industrial fire detection applications. Specifications Module Type: Addressable Short Circuit Isolator Module Model: HM201-SC Nominal Operating Voltage: 15 – 28 VDC Short Circuit Current Limitation: > 700 mA @ 24 VDC Short Loop Resistance: < 50 Ω Operating Temperature Range: -10°C to +50°C Operating Humidity Range: 10% to 93% RH (Non-condensing) Indication: LED indication during short circuit condition Function: Automatic isolation and restoration of communication loop System Compatibility: Compatible with listed addressable fire alarm control panels