The Leprechaun in that horror flick was very scary in the first movie. Motion Tunes is a highly sensitive Motion device, using microwave Technology, and a range of approx 16 feet, this device is capable of detecting thru walls, glass, and around corners.  Features a familiar tune, and a color changing led for high visibility on night vision and standard cameras.  Requires 3xAAA batteries for operation.  Just put batteries in, power on and let the device do the rest.