Apollo Series 65 45681-201APO Base with Diode

The Apollo Series 65 45681-201APO Base with Diode is engineered to maintain safety integrity and meet stringent system monitoring standards across commercial, industrial, and public building fire detection networks. Designed for use with Apollo Series 65 optical smoke, ionisation, and heat detectors, this mounting base features an internal diode connected between the zone negative terminal and the continuity terminal. In active end-of-line monitored conventional systems, this diode allows the panel to detect head removal without triggering an open-circuit fault for the entire zone, ensuring that all remaining detectors further along the loop continue to operate and report alarms properly.