This invention relates to one solar heater automatic controller with functions of constant temperature water, water display, collection tube protection, constant temperature, gas condenser stilled water device, which comprises the following parts: hollow u shape aluminum alloy tube, high temperature during wire, open touch double metal temperature controller, closed touch double metal controller, heat sensitive resistance, electromagnetic valve; stainless tube, absorptive tube u shape channel with one silicon hole pad, discharge overflow tube, four-gate, power V+ and power V- to fulfill each control requirement. |