1. Dimension:  210  mm  x  145mm  x  40mm  2. Self  power  consumption:  <3W3. Measuring accuracy of temperature: ±2°C4. Temperature range of measurement: 0~99°C5. Maximum power of controlled pump: ≤600W 6. Power of accompanied electrical heating wire: ≤800W 7. Power of auxiliary electrical booster ≤2000W ( standard collocation),≤3000W (not standard, selection available )8. Electromagnetic valve parameter: DC 12V, AC 220V, pressurized valve and un-pressurized valve are available for selection 9. operation pressure of pressurized valve: 0.02Mpa ~ 0.8Mpa, suitable for providing water directly10. operation pressure of un-pressurized valve: 0.0Mpa, connected with water tank or low pressure water providing

1.  Time  display2.  Water  temperature  display3.  Water  level  display4.  Auto  mode5.  Water  level  pre-setup6.  Manual  water  loading7.  Temperature  controlled  water  loading8.  Timing  water  loading9.  Water  loading  when  tank  is  lack  of  water10. Compulsive  water  loading11. Increasing  Water  pressure  during  water  is  loaded.12. Manual  heating13. Timing  heating14. Hot  water  circulation15. Hot  water  pipe  insulation16. Low  pressure  protection17. Collector  tube  protection18. Memory  protection  when  power  is  failure

solar water heater controller for Non-pressure system