English http://en.wikipedia.org/wiki/Heat_detector Heat detector Heat Detectors Heat Detectors English Heat detector http://en.wikipedia.org/wiki/Heat_detector Heat detector http://en.wikipedia.org/wiki/Heat_detector rate of rise/fixed heat detector http://en.wikipedia.org/wiki/Heat_detector http://en.wikipedia.org/wiki/Heat_detector http://en.wikipedia.org/wiki/Heat_detector http://en.wikipedia.org/wiki/Heat_detector