... is widely used in the staircase, hallway, stairway, basement, bathroom and other places, which is a new energy-saving electronic ... types: incandescent, energy saving lamp, ring lamp, fluorescent lamp, exhaust fan, etcSome products' delay time, sensitivity, sensing distance can be adjusted4 ... form (diameter 54mm, high 33mm), easy to use and install and can be installed in cabinets, ceiling, wall etc. ...