Motion and Darkness Sensor: With passive infrared technology, Diomart motion sensor under cabinet light turn on only when motion is detected in the dark (Illuminance <10 lux), Auto-on within 10 feet, auto-off after 20 seconds with no motion. Measure ‎7.9"L x 1.6"W x 0.4"H". USB C Charging & Energy Saving: These under counter lights have built-in 1100mAh high-capacity rechargeable battery. You can easily recharge them using a standard Type-C cable, which can be connected to your adapter, or USB o