Apollo 55000-440SIL XP95 I.S. Heat Detector (A2S) [SIL2]
The XP95 I.S. Heat Detector is distinguishable from XP95 I.S. smoke detectors by its low air-flow resistance case which allows good contact between the sensing thermistor and the surrounding air.
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![Apollo 55000-440SIL XP95 I.S. Heat Detector (A2S) [SIL2] - JEM Systems UK](http://jemsystems.co.uk/cdn/shop/files/apollo-default-title-apollo-55000-440sil-xp95-i-s-heat-detector-a2s-sil2-55000-440sil-63957709783413_1024x.jpg?v=1766067705)