You don't need to rewire your home in order to install outdoor motion-activated lighting. The Floodlight Motion Sensor is a kit that includes outdoor floodlights, which are triggered by a weather-resistant motion sensor that runs on two AA batteries (sold separately), so it can be placed anywhere on your property. When this motion sensor is activated, it sends an RF signal to turn on the outdoor floodlights, so you'll know instantly if a prowler is on your property or if guests have arrived.