Hard wired to the main fire alarm panel, conventional smoke, heat and multi-sensor detectors form an essential part of a fire alarm system. When triggered, the conventional smoke or heat detector signals the main panel, which then activates its other connected components and warns occupants of an emergency situation. Suitable for use with 2, 4 and 8 zone fire alarm panels, our range of 4-wire conventional smoke, heat and multi-sensor detectors include Apollo Series 65 and Hochiki.