FireWatcher 521 Intelligent Heat Detector

The FW521 is an intelligent Heat Detector UL and ULC listed device according to UL 521 and ULC-S530 for Fire Protective Signaling Systems for indoor use with both fixed-temperature alarm and rate-of-rise alarm characteristics. FEATURES UL521/ULC S530 Addressable Heat Detector Fixed Temperature and rate-of-rise Comprehensive self diagnostics Slim design – visually appealing