{"title":"Heat Detectors","description":"\u003ch2\u003eHeat Detectors\u003c\/h2\u003e\u003cp\u003eFixed temperature and rate-of-rise heat detectors for conventional and addressable fire systems. Fixed temperature units trigger at a set threshold, typically 58C or 60C, while rate-of-rise detectors respond to rapid temperature increase.\u003c\/p\u003e\u003cp\u003eHeat detection is specified where smoke detectors would false alarm: kitchens, plant rooms, garages, laundries and dusty industrial areas. Brands include Apollo, Hochiki, Notifier, Zeta, Kidde and System Sensor.\u003c\/p\u003e","products":[{"product_id":"system-sensor-52051e-26-heat-detector-fixed-58-c","title":"System Sensor 52051E-26 Heat Detector Fixed 58°C","description":"\u003ch2\u003eSystem Sensor 52051E-26 Heat sensor. 58°C, no Isolator - White. Type A1R. 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A Static Heat Detector (CS) which responds only when a fixed temperature has been reached and a Rate-of-Rise Detector (A1R) which has a fixed upper limit, but in addition, measures the rate of increase in temperature.\u003c\/p\u003e\n\u003cp\u003eHeat detectors have an open-web casing which allows air to flow freely across a thermistor which measures the air temperature every 2 seconds. A microprocessor stores the temperatures and compares them with pre-set values to determine whether a fixed upper limit–the alarm level–has been reached. In the case of rate-of-rise detectors the microprocessor uses algorithms to determine how fast the temperature is increasing. Static heat detectors respond only when a fixed temperature has been reached.\u003c\/p\u003e\n\u003cp\u003eRate-of-rise detectors have a fixed upper limit but they also measure the rate of increase in temperature. A fire might thus be detected at an earlier stage than with a static detector so that a rate-of-rise detector is to be preferred to a static heat detector unless sharp increases in temperature are part of the normal environment in the area protected by the heat detector.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eWireless Can be used in applications where smoke detectors are unsuitable\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eIdeal for environments that are dirty or smoky under normal conditions\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eCS detectors are ideal for use in environments with rapid temperature fluctuations such as boiler rooms Bi-directional (monitored) radio platform\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eFive-year battery life using standard AA alkaline batteries\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Apollo","offers":[{"title":"Default Title","offer_id":55106463367541,"sku":"XPA-HT-11170-APO","price":56.4,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0692\/6712\/8604\/files\/ApolloXPA-HT-11170-APOXPanderHeatDetector_A1R.png?v=1773351115"},{"product_id":"apollo-xpa-ht-11171-apo-xpander-heat-detector-cs","title":"Apollo XPA-HT-11171-APO XPander Heat Detector (CS)","description":"\u003ch2\u003eApollo XPA-HT-11171-APO XPander Heat Detector (CS)\u003c\/h2\u003e","brand":"Apollo","offers":[{"title":"Default Title","offer_id":55106463433077,"sku":"XPA-HT-11171-APO","price":56.4,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0692\/6712\/8604\/files\/XPander-A1R-Heat-Detector-400x400_be19b5d2-2548-451e-8b37-69d7606cf1ee.jpg?v=1775743707"},{"product_id":"apollo-xpa-cb-11170-apo-xpander-heat-detector-a1r-with-base","title":"Apollo XPA-CB-11170-APO XPander Heat Detector (A1R) with Base","description":"\u003ch2\u003eApollo XPA-CB-11170-APO XPander Heat Detector (A1R) with Base\u003cbr\u003e\n\u003c\/h2\u003e\n\u003cp\u003eThe XPander Multisensor Detector is a thermally enhanced smoke detector and as such will not give an alarm from heat alone. 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