Apollo XPander Multisensor Detector and Mounting Base (XPA-CB-13032-APO)

The XPander multisensor smoke detector is a thermally enhanced smoke detector and as such will not give an alarm from heat alone. It is a development of the XPander optical detector and goes further in its capabilites of fire detection.

Multisensor detectors are recognised as good detectors for general use but are additionally more sensitive to fast burning, flame fires - including liquid fires - than optical detectors.

They can be readily used instead of optical smoke detectors but shoul;d be used as the detector of choice for areas where the fire risk is likely to include heat at an early stage in the development of the fire.

As with XPander optical smoke detectors the increased reliability of detection is combined with high immunity to false alarms.

Although the XPander multisensor detector relies on both smoke and heat sensors it is not possible to switch from smoke detection to heat detection.

Photo-electric detection of light scattered by smoke particles over a wide range of angles. The optical arrangement comprises an infra-red emitter with a prism and a photo-diode at 90° to the light beam with a wide field of view, heat sensitive thermistor. The detector's microprocessor uses algorithms to process the sensor readings.

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