Smart Motion Sensor Lamp Holder with E27 Adapter Motion activated lighting for convenient control: the builtin PIR sensor detects movement and automatically switches the connected LED light on or off, removing the need for manual operation. Easy retrofit with broad LED compatibility: the E27 PIR Sensor Adapter converts an existing lamp holder into a motion sensing unit and works with a wide range of LED lights; suitable for both AC 110V and 220V power supplies. Energy saving automatic switch: the lamp turns on when motion is detected within the sensing range and turns off automatically when no motion is detected, helping reduce energy use. Durable and compact design: made from sturdy PC material for reliability and longevity; compact size of 5 x 5.7 x 5.7 cm ensures it fits seamlessly in most lamp fixtures. Practical use scenarios: hallway or corridor lighting that activates on approach; closet or pantry lighting for hands access; staircase or entryway lighting to improve safety during arrival or departure. Key attributes at a glance: motion sensor built in, E27 compatibility, supports AC 110V and 220V, LED compatibility, compact and durable PC construction, fits most lamp fixtures.