Uninex Mechanical Pin Timer With Single Polarize AC Outlet PS90 24HR mechanical pin timer w/ single polarized outlet. UL listed Great for home security and light control. Turns on/off automatically appliances, lamps, electrical devices. 24 hour cycle with 1/2 hour setting on/off, can be set in 30 minutes intervals.Programming repeats daily. convenient override switch. Rating: 125Vac 60Hz; 1/2hp. 15A Resistive. 15A General use. 1875W Tungsten. 500VA electronic Ballast. Lift pins up first, then pins can be pushed down to set up.