This indoor/outdoor polycarbonate cover helps protect devices such as dual action pull stations, keypads for entry systems, intercom stations, emergency buttons, electrical light switches, duplex plugs, etc. The strong, durable construction takes the toughest knocks while it guards against accidental or intentional physical damage. This Universal Stopper is a clear, waterproof Type 3RX cover with a red horn housing, alarm, enclosed back box, open mounting plate and "IN CASE OF FIRE." label. Cover is designed to comply with ADA and is less than 4 inches in depth. Other mounting options include a surface or flush mount cover. The cover is also available without a horn housing or message hood. Protects against vandalism, accidental damage and damage caused by severe environments inside and outside. Has a 105 dB self-contained alarm (complete with battery). Cover is molded from thick, super tough polycarbonate material. Sized to fit most pull stations. Includes an enclosed back box and open mounting plate. High strength continuous hinge. Low profile, ADA Compliant. Gaskets included. UV-stabilized to keep cover clear. Fire Label reads: "IN CASE OF FIRE - LIFT COVER PULL FIRE ALARM" Typical working properties of polycarbonate are -40° to 250°F (-40° to 121°C). Three year guarantee against breakage of polycarbonate in normal use (one year on electro mechanical and electronic components).