The SafeZone Motion Activated Alarm w/Keypad can be heard up to 750 feet away, scaring away would-be intruders and alerting others. It has a large detection zone: 20 ft. long by 110 ft. wide. The unit mounts quickly with the included bracket and screws - no wires to run. Create your unique four-digit code, select chime or alarm mode, and the SafeZone alarm goes to work! No remote controls to deal with - simply share the code with whomever you like and change it whenever you like. The unit features a 30-second exit delay and a 10-second entry delay. Stores can use the chime mode to announce customers or families can use it to alert caregivers when children or elderly persons enter unsafe areas. A low battery indicator ensures you will never be unprotected. FEATURES Loud 120dB Siren 20-foot detection range Quick and easy installation Contemporary design Unlimited uses Entry and exit delays