ShowerSense lets you enjoy the steam experience, plus your choice of three luxury shower options. Either the 550 or 450 Digital Control lets you select either of two different shower temperatures and gives you total touch screen command over all steam and shower functions, without the clutter of multiple shower controls. The ShowerSense Valve is easy to install in any position behind the wall and is both temperature compensating and pressure-balanced to optimize user comfort. Steamist® Total Sense™ Showersense™ Shower Valve, 9.1 gpm Shower Flow Rate, 1222 Pressure Balanced, 1/2 in Valve Inlet Connection, 1/2 in Valve Outlet Connection, 125 psi Pressure, 81 to 120 deg F, Wall Mounting, For Use With: Model TSC-450 Steam Control, White, Domestic