Tronic 360° Ceiling Mounted PIR Motion Sensor, 20m Detection Range

Our review

This Tronic sensor is a ceiling-mounted PIR unit that watches the whole area beneath it rather than a single direction, with a stated maximum sensing distance of up to 20 metres. That combination suits rooms where a wall-mounted detector would leave blind spots: corridors, stairwells, warehouses, workshops, larger washrooms, or open-plan spaces where lights should come on only when someone is present. Because it is a PIR sensor rather than a switch, it needs to be wired into the lighting circuit, so plan for installation by someone competent with mains wiring. Before buying, check the ceiling height and the area you need covered, since detection range and mounting height affect how reliably movement is picked up. Also confirm the load your lights will draw and whether your fittings are compatible with sensor switching, as some drivers and lamps behave poorly on automated control. Compared with a standard wall PIR, this type gives broader coverage from a single point, but it is less useful in small rooms or where ceiling access is difficult. If your goal is simply to stop lights being left on in a busy shared space, this is the category to look at; available on Sokonia.