Compact recessed motion sensor for lighting that fits standard 20 mm openings. Designed for straightforward installation and reliable presence detection to control lighting loads between 3W and 40W. Key benefits Precise fit and easy installation: recommended installation hole diameter about 20 mm for quick mounting in ceilings, panels, or fixture housings. Broad electrical compatibility: operates across a wide working voltage range AC85265V, suitable for most residential and commercial AC supplies. Energy efficient control: automatically switches lighting loads within the supported 3W40W range to reduce unnecessary runtime and manual switching. Wide detection coverage: 110 degrees sensing angle provides broad coverage to improve detection consistency and reduce missed activations. Compact performance: small footprint makes the sensor suitable for tight spaces and retrofits where larger modules will not fit. Key specifications Recommended installation hole diameter: about 20 mm Load power range: 3W to 40W Working voltage: AC85265V Sensing angle: 110 degrees Function and compatibility Designed to act as an occupancy or motion sensing switch for lighting circuits within the specified load and voltage range. Compatible with fixtures and lamp types whose combined load falls within 3W to 40W and that accept a recessed sensor installation in a 20 mm hole. Suitable for installations and retrofits where a compact sensor is required. Performance and practical notes 110 degrees sensing angle provides widearea coverage in front of the sensor for reliable detection in typical room layouts. Wide voltage tolerance allows stable operation in varied electrical environments without additional components. Compact size minimizes disruption to fixture design and preserves the appearance of the installation. Typical use scenarios Hallways and corridors: install in recessed fixtures to automatically turn lights on when people pass and off after areas are vacated. Stairwells and small utility rooms: use the sensor to ensure lights activate only when needed, simplifying access and improving convenience. Cabinets, closets, and display cases: fit into confined openings to provide hands lighting control for small enclosed spaces. What makes it stand out Small, installationfriendly form factor matched to a common 20 mm hole size. Reliable operation across a wide AC voltage range and a focused 110 degrees sensing field that balances coverage and falsetrigger control. Clear compatibility with lowpower lighting loads from 3W up to 40W. Installation reminder Prepare an installation hole of about 20 mm diameter and verify that the total lighting load is within the 3W to 40W range before connecting to an AC85265V supply. Follow standard electrical installation practices and local codes when mounting and wiring.