System Sensor 5621 Heat Detector ROR

System Sensor 5621 Multiple configurations. The 5600 series offers a full-line of configurations to accommodate a broad range of applications. Both single- and dual-circuit models are available for low- and hightemperature ratings with either fixed temperature or combination fixed temperature/rate-of-rise (ROR) activation. The ROR element ofthe fixed/ROR models is restorable to accommodate field-testing.