【Top-notch Photocell Sensor Technology 】 Take the upgraded photocell sensor, our exterior hanging light can sensitively detect the brightness of the surroundings to adjust the switch. Auto turn on at night time when ambient brightness less than 20 LUX, auto turn off at daytime when brightness over 100 LUX. You don't need to turn it on/off manually, free your hands, and save your bills on electricity. Kazoo | Kazoo 7.68" Hardwired Outdoor Hanging Light 7.68 H x 7.2 W x 7.2 D | 7.68" H X 7.2" W X