Energy-saving design, strong light automatically stops working, and infrared motion sensor automatically switches the light on and off according to human body movement in the dark. 4 LED bulbs serve as the lighting source, which is energy-efficient and has a long service life, so there is no need to worry about maintenance. also. Easy to install using double-sided tape, suitable for any smooth place. Powered by 1 AA battery (not included). Small in size, it can be used in almost any place where light is needed in the dark, such as keyholes, kitchens, corridors, stairs, safes, etc. NOTE: This LED light is perfect for working in dark places, please use it at night or in a dark room. Because the stronger the light, the less sensitive the motion sensor becomes. installation method: 1. Use double-sided tape to fix. 2. Use M3.0X20 mm screws to fix the base (you need to bring your own screws) troubleshooting: 1. When turning on the power, the light does not light up. Solution: A. Check the safety of battery installation B. When the ambient light is too bright, the light is on standby. C. The battery is out of power, please replace the battery. 2. When the power is turned on, the LED light flashes. Solution: A. The host needs one to two minutes to stabilize the internal circuit. B. The battery may be low, please replace the battery.