An audio and visual alarm system with a customizable sound level between 85 and 113 dB. Maintains a connection to BEAM control unit at a distance of up to 2,000 meters in open space. It is completely free of wires, designed to protect yards, drive ways, gardens and all types of other external locations. With a rechargeable solar-power battery, it can work with other wireless sirens on the same system. For smaller premises, it can also work as an on-site alarm systemwhen paired with other accessories, such as remote controls, door/window contact sensors and PIR detectors, on the same radio frequency.