Apollo XP95 Multisensor Detector with optical smoke sensor and a thermistor temperature sensor whose outputs are combined to give the final analogue value. Sensitive to a wide range of fires and well-suited to environments such as hotel bedrooms. Unaffected by wind or atmospheric pressure.- Reliable fire detection in areas with a wide temperature range from -20C to 60C- Well suited to environments such as hotel bedrooms, warehouses and loading docks- Unaffected by wind and atmospheric pressure- Alternative to Ionisation detectors- Detection principle Photo-electric light scattering.- Protocol voltage 5 to 9V peak to peak