This motion sensor strip light is perfect for use in hard to light areas. Imagine reaching into a dark cupboard or wardrobe &, as the light senses your movement, it illuminates so that you can easily find what you need. This light is also great used in the bathroom; at night time, this handy little light will gently illuminate your twilight toilet trip so you won't have to be rudely awoken by the bright main light! Its clean, white design means, not only will it seamlessly blend in with its surrounding, but that it can also be fitted easily, using the sticky pad or screws provided, & it can also be used as a portable light if required. To insert the batteries, simply slide off the cover located at the back of the light & place 4 x AAA batteries into the space within, then replace the cover. There is no switch to turn the light on/off; it will be activated once the batteries have been inserted. There is also a light sensor, meaning that the LEDs will only switch on when it is dark, which preserves the battery life. The PIR sensor works when movement is detected in darkness, it then turns off its 8 bright white LEDs after movement has not been detected for 30 seconds. Requires 4 x AAA batteries (not included).