Solar energy is energy that a kind of economy energy, environmental protection, can keep on, the for this reason solar energy water- heater is too positive quick universal.
   
The Water temperature water level gauge is to measures with a kind of electronics that solar energy water- heater kit use the instrument, can to water temperature in the water tank with water level proceed probe into, manifestation with automatic control.The function is stable,15 years in service life.
   
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