The Safety Beam creates an invisible infrared barrier between objects – or people. If that barrier is crossed, an alarm is sounded. It can be used indoors or outdoors. The beam can span a distance of up to 60 feet, and users can choose between a loud alarm or a “friendly” chime for intruder notification. Its great to guard your drive way/ pets/office entrance/ or just to stop people from coming to certain areas # Extremely simple to set up: switch on the transmitter, line up the receiver and switch on. The receiver will sound whenever the invisible infra-red beam is broken # Creates an excellent invisible alarm barrier, a bit like the James Bond movie Gadgets # Approx (60ft) range # 3 sound modes – chime, continuous chime and alarm siren # Can be powered by 3AA Batteries or the included power adapters # Mount on the Wall Easily or free standing # IR Beam High/Low Selection High Level Up to 60 Feet Range # Chime Volume Hi/Mid/Low Switch # Trigger Mode Alarm/Chime/Continue Chime Selection # NICE & EASY FITTING GUARANTEED! # 12 MONTHS WARRANTY!