This North American style,Multipurpose push button switch and clear Mini Stopper II cover protect a wide range of applications indoors. The button incorporates a unique, patented design and the clear cover helps prevent accidental activation. The highly advanced Stopper Station push button switch is ADA Compliant. Raised FIRE and flame symbols molded into product. Unit has Push-to-Activate, Key-to-Reset button. o activate, turn to reset. Mini Stopper II consists of a clear, tamperproof, super tough polycarbonate shield, frame and spacer that fits over manual pull stations. Cover contains no horn. Designed for surface mount units, spacer has knockouts for exposed conduit.