SR201 is controller with micro-computer-full-automatic used for integrated non pressure solar water heater. It is developed with high-performance 32-bit single-chip microcomputer to realize intelligent control. All devices adopt industrial standard, and can operate freely in cold, high temperature and humid environment.
At the same time, clock chip make sure time control accurate. The controller has the advantages of LCD display, with beautiful appearance, more stable and reliable performance, and convenient installation. It has become the most ideal supporting product of solar water heater.
SR201 offer by with Chinese version and English version

Size of house: 187mm*128mm*46mm
Power supply：100-240V/AC50-60Hz
Accuracy of temperature measuring： ±1℃ 
Range of tank temperature measuring：0 ~99℃ 
Accuracy of temperature control：±1℃ 
Power of water loading pump: ≤200W
Power of electrical heating-cable: ≤600W
Power of electrical backup heating: ≤1500W
Parameters of solenoid valve: DC DC12V / AC AC220V pressure valve and low pressure valve can be selected
※Working pressure of pressure valve: 0.02Mpa ~ 0.8Mpa suitable for tape water.
※Working pressure of non pressure valve: 0.0Mpa for water supply with water tank or low water pressure
Ambient temperature ：-10℃ ~ 50℃ 
Water proof grade：IP40.

1.Time setting
2.Timing filling and heating with three time-sections
3.Pipe insulation (belt-cable heating) function
4.Booster pump function
5.Hot water circulation.
6.Delay time of water filling when tank is lack-of water
7.Celsius degree and Fahrenheit unit switch      
8.BEEP Beeper error warning
9.Compulsive water filling function
10.Manual water filling
11.Manual heating
12.Tank high temperature protection function
13.High temperature protection of collector tube
14.Tank anti-freezing protection
15.low water pressure protection
16.Overflow protection
17.Memory protection
18.Screen protection