The unique Panasonic FV-MSVKI WhisperGreen Motion Sensor Module is a powerful, easy to install plug-and-play device. This motion sensor automatically activates when someone enters the room. All you have to do is apply your desired settings and the Panasonic motion sensor becomes fully automatic. Additionally, it features a convenient design that allows you to set a 20 minute delay timer for the fan. This way you can control when it turns the fan on and off after the motion sensor has been tripped. This bathroom motion sensor is ideal for those with disabilities, the elderly or those in assisted-living environments.