The SD-651 is designed to meet the performance criteria designated by UL. Its sensing chambers are sealed against back pressure air flow, dirt, and insects.
The L-Series BZRC is a red bezel for ceiling mount strobes and horn-strobes. When ordering indicate the marking option –F FIRE, -AL ALERT, -AG AGENT, -EV EVAC, -F FIRE, -P PLAIN, -SP FUEGO, -PG FOGO (
The Thermotech 302 Series rate-anticipation heat detectors operate within a controlled range of two to three degrees of their set points, regardless of the speed or rate of temperature rise.
This unique and patented device has been helping stop false fire alarms around the world for more than 25 years, without restricting legitimate alarms.