The object of the invention is a single-control mixing valve with temperature control. The valve has two operating states, a normal operating state and a manual operating state. In the normal state, an adjusting knob is used to select the temperature and the opened/closed position is controlled by a solenoid valve. In the manual operating state, the solenoid valve is by-passed. The valve solution according to the invention can be applied, for example, to photocell-controlled wash basin faucets.