Safety technology inc. UB-1PNhas a mechanical adjustable timer that opens or closes a circuit and has a timed delay before reset. It does not requiring power for actuation and has a timer life of over 1,000,000 operations. When local code or authority requiring a pneumatic button be used, this device solves the problem. Pneumatic button is offering many options to provide just what a customer wants in one convenient package.CLICK HERE FOR Safety technology-UB-1PN-specifications.PDF Has a timer life of over 1,000,000 operations Helps solve the problem of local code or authority requiring a pneumatic button be used. One year guarantee on electro mechanical and electronic components. Construction Faceplate constructed of cast aluminum. Installation Ready to be assembled out of box and easily installed within minutes on site. Operating Temperature is 15 to 120F (-9 to 49C).