Stopper II without Horn Flush Mount - Blue STI-1200-B This unique and patented device has been helping protect everything from push buttons to keypads and more around the world for almost 30 years. Ideal for schools, hospitals, nursing homes, stores, hotels and public buildings of almost every kind. STI-1200-B consists of a clear, tamperproof, super tough polycarbonate cover and frame. The cover is connected to the frame by a cable. When the cover is lifted, it hangs off of the frame until the cover is snapped back onto the frame. Additional models available with a built-in warning horn that sounds when cover is lifted to gain access to the protected device (see STI-1100-B).