This PIR motion sensor has a square design and can be installed on the wall. The detection range of the sensor is 120º , giving you wide detection coverage in a specific area. The maximum sensing distance is 10 meters under ambient temperature conditions below 24℃ . The delay time is adjustable from 10 seconds to 7 minutes , allowing you to customize how long the light stays on after motion is detected. This motion sensor is powered by a 220-240V/AC 50/60Hz power supply and has a maximum load rating of 500W for incandescent lamps, or 200W for LED/energy saving lamps. It also features an ambient light setting, which allows you to customize the sensitivity of the sensor to the light in your environment. The recommended installation height for this motion sensor is 1-1.8 meters. This motion sensor has an IP20 rating, which means it is protected against solid objects larger than 12.5mm, but it is not protected against liquid ingress. Therefore, it is recommended for indoor use.