| 摘要 |
A heat alarm detection device comprises a housing 16 defining a body, a sensor mounting panel 22 located on said body and a heat sensor 12 extending from said sensor mounting panel 22. A control circuit 32 is configured to detect a temperature rise at the heat sensor 12 and output an alarm signal in response thereto. At least the surface 22A of the sensor mounting panel 22 from which the heat sensor 12 extends is a dark colour. The heat sensor 12 may be a thermistor. The device may be used to detect heat from a fire. The surface 22A of the sensor mounting panel 22 may be neutral, or have a hue ranging from purple to green, and have a value of 3 or less on the Munsell Colour System. The surface of the sensor mounting panel 22 may include a plurality of embossed or impressed pyramid shaped features. The sensor mounting panel 22 may be concave. |
