The Horn/Strobe/Speaker Damage Stopper® is a protective wire guard that helps protect strobe units against vandalism and accidental damage. Constructed of tough, 9-gauge steel wire coated with corrosion resistant white polyester, this surface mounted guard can take hard knocks in stride and provides maximum protection for System Sensor SpectrAlert® Advance series strobe notification appliances. As all STI protective covers, this guard is backed by a three year guarantee against breakage in normal use. Installation and servicing is easy with all screws and anchors provided. This Stopper is highly recommended for areas where abuse is severe or it is imperative that strobe units continue to operate.