The cabinet light comes with 19cm of length, 3cm of width. It has 10 LED bulbs that provide adequate glow and emit almost negligible heat. The light is powered by 4 AAA batteries (not included). It has super sensitive sensors which cover a distance of about 3m - 5m. These under-cabinet lights can be installed on any surface without requiring any hardware. They come with a strong adhesive tape on the back, which provides a secure and strong hold. These lights come with motion sensors, which trigger the light on upon movement within 3 metres to 5 metres. They turn off automatically when there is no movement for 15 seconds. These lights are of great use in closed-door spaces such as wardrobes, kitchen cabinets, bedside drawers, wardrobe, etc. - Neel Blue Motion Sensor Light, Under Cabinet Lighting, 3pcs in White