SpecificationsZ?? Sensitivity : 3 meter Distance Sensor Range: 120 degrees Operating temp :-20AC-40AC Light color: Warm White/Cold White LED life: 50,000 hours or more Mounting: Tape or Magnet Product Diameter: 8.0 cm FecturesZ?? Support two way installation: double-sided adhesive sticker or magnetic, No hammers, drills, or tools of any kind required Suitable for use in wardrobes, cupboards, drawers or on stairway 3.Slim, no radiation, flexibility and power savingNoteZ?? Please kindly check whether the batteries have been installed in the correct direction. This light can only be turned on in darkness environment. The light won't turn on if the light sensor has been detected by the enough light. If you use Alkaline battery first and then change to zinc-manganese dry battery, the lights might not work as the zinc-manganese dry battery is shorter than the Alkaline battery. The sensor light might not work if you use the infrared heater in winter. The infrared will cause failure of the sensor. However, the light will get back to work in 30 minutes after turning off the heater. Energy-Efficient: Automatically powers off after 15-30 seconds of inactivity, lighting your path as you cross and shutting off soon after. Battery Operated: Powered by 3PCS AAA batteries (not included) for coreless installation. To provide you with illumination in areas that have limited or no access to electricity. Easy Installation: Simple to install, no hard-wiring. With adhesive pads and built-in magnet, you can stick on anywhere you like. PIR Motion & Light Sensor: Built-in motion sensor and can detect motion distance up to 13 feet away. Lightweight & Portable Design: Circle shaped and compact sized make it an ideal night light for