Protective polycarbonate cover with horn that helps protect pull stations from false fire alarms. This flush mounted cover offers excellent protection against physical damage (both accidental and intentional) without restricting legitimate alarm in operation. It is ideal for schools, colleges, hospitals, nursing homes, stores, hotels and public buildings of almost every kind where there is a threat of false alarms. When this Stopper II model is lifted to gain access to the protected alarm, a piercing self-contained 95 or 105 dB warning horn (at one foot) sounds. Immediate attention is drawn to the area and the individual that lifted the cover will either run or be caught. Three year guarantee against breakage of polycarbonate in normal use (one year on electro mechanical and electronic components). Fire label provided on hood.