EN 54-5
Practical guides on fire alarms, extinguishers, emergency lighting and UK fire safety rules, written for installers, contractors and building managers.
BS 5839-1
Heat Detectors Explained: EN 54-5 Classes, Rate-of-Rise & Siting
Heat detectors alarm on a set temperature or a fast rise in temperature. This guide explains EN 54-5 classes such as A1R and CS, heat vs smoke detection, and BS 5839-1 spacing and ceiling heights.
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