The Numens CN302A is an addressable detector base designed to be compatible with 2-wire fire detection systems. It features a 4-terminal connection and has a diameter of 102mm. This base is suitable for mounting on solid ceilings with flexible cable entry options, either through the rear or side, depending on whether a low or high profile model is used. The base is engineered for reliable and durable connections to detectors with plated contacts and includes a square washer for secure cable clamping