Haunted Doorbell is made of plastic and has 3 different sets of scary sounds that include: thunder, howling, laughing, a cat screaming, birds cawing, organ music, moaning, groaning and screeching. Requires (2) – “AA” Batteries (included). Measures approximately 2.5″ high x 3″ wide x 1.25″ deep. For door bell use just place the black box on top of doorbell chime and turn switch to “ON” position. For Motion Activation – place black box with the motion sensor hole facing direction where the movement will occur. Turn switch to “Motion- Activation” setting. Haunted Doorbell is a trademark of Tekky Toys. Copyright (c)2008 Tekky Toys. All Rights Reserved.