NOTE: 1. The sensitivity of the motion sensor will increase as the environmental temperature gets cooler. For best performance, gently clean the lens with a soft cloth every 1 or 2 months to assure maximum sensitivity. 2. For best performance, install fixture at least 6 feet above The ground. At such a height, the lantern will provide a detection distance of up to 40 feet at 77 degrees Fahrenheit.(See Fig.2) 3. The sensor detects across a detection range of 220 degrees.(See Fig.3) 4.