HydroPanel II Piezo shower system combines the convenience of modular shrouding with the benefits of solid state electronic water control. The Hydropanel II's stainless steel shrouding provides a concealed shower system where in-wall piping does not exist or may not be practical. The ESP pushbutton shower system relies on Piezo sensor technology to deliver tempered water to a shower for a pre-set length of time. A bather activates the shower system by pressing a pushbutton. The pushbutton invades the magnetic field of a proximity sensor that is assembled behind the pushbutton. The sensor sends this signal to a solenoid valve which opens and sends water to the showerhead. The shower will operate for the pre-set run-time, or until the bather presses the pushbutton again. The ESP HydroPanel II is ideal for new or retrofit applications in schools, health clubs, correctional facilities, and remodeled buildings - anywhere space, hygiene and water conservation are concerns. Tempered water can be supplied to the ESP HydroPanel units by a master mixer such as the Powers HydroGuard 430 thermostatic mixing valve or Hi-Lo Cabinet Supply Fixture.