- The wireless alarm system for the entrance with a half-mile weather-resistant range, equipped with motion sensor and motion detector, is an ideal solution for monitoring security in large properties. The system
features improved wireless transmission technology to avoid signal interference from other devices. The motion sensor has a detection range of up to 50 feet and an enhanced detection angle to reduce false alarms. With 2 adjustable sensitivities (Low=35ft; High=50ft), it is perfect for driveways, paths, yards, garages, gates, pools, and any other area you want to be alerted in your outdoor/indoor space. Easy to install and operate: Power on the motion sensor with 3 AA 1.5V alkaline batteries (batteries not included) and plug the receiver into the outlet, and you are good to go. The unit has been pre-programmed before shipping, simply place the sensors on walls, fence posts, trees, or any other surface, with installation taking just a few minutes. Fully expandable system - The unit includes one plug-in receiver and two motion sensors. It can be expanded up to 32 sensors and unlimited receivers for complete coverage of your outdoor/indoor property. With 4 adjustable volume levels and 35 optional melodies, you can match different melodies with different sensors around your property to distinguish where motion is being detected.