Stern usually supplies “Component kits” which include all the components a faucet producer needs to prepare his own range of electronic faucets. A kit usually includes an infrared sensor, a solenoid valve, water proof connectors and a battery box if needed. There are kits for internal, external and concealed applications. The program of the electronic unit is according to the Producers request and needs. In addition to this, Stern also markets piezoelectric programmable solutions for different products