Art Guard® is a patented art security device that provides a primary defense against theft of individual pieces of hanging art. The discreet, highly reliable, battery operated device works for the smallest pieces to the largest. Tampering is met with a loud, foolproof, 120 db alarm. Its ease of use, flexibility and, most of all, affordability make it a perfect primary or secondary line of defense for any art worth hanging and in any situation. For additional information see: http://www.artguard.net/product_info.html