STI-1230 Stopper II without Horn with Clear Spacer, Protective Polycarbonate Cover

This unique device has helped prevent false fire alarms around the world for more than 35 years, without restricting legitimate operation of devices. Ideal for schools, colleges, hospitals, nursing homes, hotels and all public buildings where there is a history or a threat of false fire alarms. Protective polycarbonate cover. Helps prevent false alarms. Clear spacer