Visitor Chime Laser Beam Sensor
Greet your visitors with a pleasant chime as they enter your home or store with this Laser Beam Sensor, and transform it into a powerful security alarm as nighttime approaches. This laser beam sensor transmits an infrared beam that will be triggered when someone walks past and interrupts the beam. The ideal location for the laser beam sensor is by the door or entryway. This product may also be used to warn you when your child or pet leaves their designated area.