The Heat Detector FW521 is Addressable, Intelligent and UL and ULC Listed device according to UL-521 and ULC-S530 for Fire Protecting signaling systems for indoor use with both fixed temparature alarm and rate of rise alarm characterstics.
Capabilities: The FW521 is Intelligent Addressable and takes one address on the signaling line circuit of the fire alarm control panel.
Compliance: UL, ULC, FM, FCC Listed.
Design: The Heat Detector is a slim Design that combines visual appeal with a high standard of reliability.