Product DescriptionThe STI universal stopper with horn provides strong protection for fire alarm pull stations by enclosing the device in a clear durable cover that sounds a loud alert as soon as the cover is lifted, helping deter tampering while keeping full access available during an emergency. Its flush mount design allows it to sit cleanly against the wall for a neat professional appearance and the integrated fire label ensures clear identification in busy commercial spaces. The unit is built from tough polycarbonate that withstands impact and long term wear, and its dependable hinge and secure mounting hardware maintain smooth operation through repeated use. Suitable for schools offices retail spaces and other public environments this stopper offers a practical and reliable way to safeguard critical life safety equipment while ensuring occupants receive immediate audible feedback when the cover is opened.