Description
Description
The CR-135-MP is a moisture-sealed combination fixed temperature (135°F / 57°C) and rate-of-rise heat detector. It is a single circuit device. The Rate-of-Rise function allows the detector to close its contacts when the temperature at the ceiling increases at a rate of 8.4 Celsius degrees (15 Fahrenheit degrees) per minute. This heat detector is connected to a fire alarm system’s input circuit as an initiating device. The internal contacts are normally open, and will close when the detector operates either on a rate of temperature increase, or if the releasing temperature is reached. It can be installed with an addressing module if it is to be annunciated as a specific room or space, e.g. electrical room, garbage compactor, etc. With its non-metallic diaphragm, the detector can operate normally at low temperatures, making it suitable for non-heated or chilled environments including garages and carports.The Rate-of-Rise is recommended in conjunction with sprinkler devices as the detector will initiate and alarm before the waterflow switch. The "MP" designation indicates the detector is suitable for use in areas where condensation or corrosion can have harmful effects on circuit wiring connected to standard terminals. Its seal plate (with extended pigtail leads) will mount onto a typical cast exterior back box.
Features
- Combination Rate-of-Rise and Fixed-temperature (135°F / 57°C) operation
- Moisture sealed
- Mounts to standard "octagon" box
