Use the D254 Fixed Temperature Heat Detectors for indoor confined areas where a fire increases air temperature slowly and where there is a substantial increase in air temperature before the fire breaks confinement. Furnace rooms, closets, bathrooms, and other confined areas are appropriate applications for fixed temperature detectors.
Use the D254 (response-rated at 135F [57C]) in areas where the ambient temperatures do not exceed 100F (38C). These detectors operate in 12 and 24 VDC detection circuits using a variety of Bosch detector bases. A latching steady-on LED is available when these heads are used with the D253 24 VDC base or the D271S 12 VDC base.
UPC: 782695017708
Also known as: DS-D254, BOS-D254
Technical Specifications:
- Temperature (ambient): +32F to +100F (0C to +38C)
- Color: Bone white
- Dimensions (diameter x D): 6 in. x 2 in. (15.2 cm x 5 cm)
- Response Time: <120 sec
- Voltage (operating): 12 VDC or 24 VDC
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