Motion Sensor W Sound And TimeDesigned to control special effects or props used in a haunted house environment. Just plug your 110v prop into this unit and when the unit senses motion in the area, the prop will come to life. Length of time the outlet is powered on is adjustable from about 4 10 seconds. You can also set the time to prevent re activation for about 5 seconds to 10 minutes. This prevents constant activation of the prop. Included is an external horn type speaker which