The innovative SkyVue outdoor alarm device incorporates a 8ft coated steel aircraft cable for securing your SkyVue TV from theft. If the thief cuts the steel cable, the circuit is broken which instantly emits an ear piercing 120 decibel screaming alarm and activates 2 high intensity light flashers which can be seen at night up to a quarter of a mile away. Comes with some special anti-theft head screws and a socket head for install to attach the TV vertical mount brackets to the back TV housing. Nothing is 100%, but our customers have found this product to be an excellent deterrent for minimal cost. This alarm device is designed for the outdoors, and will not be adversely affected by cold or hot temperatures, ultra-violet radiation, rain, humidity, and is water resistant. Alarm device comes standard with a stainless steel case designed to be durable and to provide years of service.