Fire Detection Devices Ltd CR-200-W | Heat Detector, 3 A, for Elevator Recall and Door Release, White

This is the standard THERMOFLEX„ double circuit, normally closed (N/C) contacts detector, inwhich the connectivity is modified with pigtail leads that extend through a seal plate.thisprovides for enhanced protection against corrosive or moisture-laden environments. combination rate-of-rise and fixed temperaturethe model number prefix "CR" indicates that the detector is a combination rate-of-rise andfixed temperature, (often referred to as "dual-action"), unit. The rate-of-rise function allows thedetector to open both sets of its contacts when the temperature at the ceiling increases at a rateof 8.4 celsius degrees (15 fahrenheit degrees) per minute. In most cases, the opening of oneset of contacts initiates the fire alarm sequence. The second set of N/C contacts is commonlyused to initiate an ancillary function. The fixed temperature portion consists of a spring-loadedplunger held in place by a eutectic solder that will fuse at the specific temperature (in fahrenheitdegrees