The SOTERIA® Heat Detector features two heat sensors located laterally to ensure good heat detection in all orientations. 

The SOTERIA® Optical Detector uses new optical sensing technology PureLight®, to detect smoke particles entering the chamber. PureLight™ marks a new stage in the development of Apollo optical technology and aims to reduce the possibility of false alarms and to increase the reliability of detection of a real fire.

The SOTERIA® Optical/Heat Multisensor Detector uses new optical sensing technology, PureLight®, to detect smoke particles entering the chamber and is fitted with two thermistors for detecting heat. It can be switched to detect smoke, heat or a combination of both offering flexibility.