【Infrared Induction Sounder】The Halloween sound machine is a infrared induction sounder, portable and easy to use, can be installed on clothes, candy boxes, present boxes, indoors, front doors, hallways, or anywhere you need it. 【Creat Scary Atmosphere】Halloween Sound Speaker include a Voice-activated Speaker with colorful LED. The sound contains: strange voice, witch's terrifying laugh, terrifying scream and more, which will add scary atmosphere to your halloween, makes it more fun. 【Premium Material & Size】The Halloween Sound Sensor is made of premium ABS material, durable and lightweight.Size: 11cmx5.6cmx3.6cm/4.33inchx2.2inchx1.4inch. Halloween animatronics requires AAA batteries to function properly (excluding AAA batteries). 【Halloween Supplies】When the little ghost knocks on your door, your door will scream! When someone walks by your yard and speaks loudly, your patio ornament will scream! When a friend picks up your Halloween present , the present will scream! When you show up at a party, your clothes or your candy bag will scream! 【Wide Applications】The Halloween sound effects machine can easily be the main centerpiece of your Halloween theme, which can be used as theme party decorations, pranks props, door greetings and more. It can also be used as haunted house props.