System Sensor 5621 Mechanical Heat Detector

The System Sensor 5621 provides clear markings on the exterior of the unit to ensure that the proper detector is being used. Alphanumeric characters identify the activation method, as well as the temperature rating, in Fahrenheit and Celsius degrees. Fixed temperature models are identified as FX, while combination fixed/ rate-of-rise units are marked FX/ROR. The 5600 series also provides a post-activation indicator in the form of a collector. When the detector is activated, the collector drops from the unit, making it easy to identify the unit in alarm.

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 high temperature ratings with either fixed temperature or combination-fixed-temperature/rate-of-rise (ROR) activation. The ROR element of the fixed/ROR models is restorable to accommodate field-testing.

To satisfy a variety of installation needs, the System Sensor 5621 easily mounts to single-gang and octagonal back boxes. And these models accommodate four-square back boxes when used with a square-to-round plaster ring. The reversible mounting bracket permits both flush- and surface-mount back box installations.

Features / Specifications

• Easy-to-use terminal screws
• Reversible mounting bracket
• Fixed temp and combination fixed- temp/rate-of-rise 135°F or 194°F ratings
• 4˝ square with square to round plaster ring
• 3.5˝ and 4˝ Octagonal