Main features: 1., accurate, stable intelligent digital display thermostatic system, high brightness dual color 4-digit LED digital display (temperature display is red, time display is blue). 2. reliable anti scald and anti freeze protection function. 3., the world's leading solid mute power supply system, no transmission components, does not affect the flow of water, without any external power supply or battery, long service life. With China Invention Patent No. ZL 201310249004.9 4.solving the following 3 shortcomings of the traditional power supply mode: (1) AC power: dangerous. (2):trouble of replacing batteries , (3): hydraulic power flow:small flow, easy to plug.