... int ank Control temperature and level, charge water,. Complte automatic Technical date1. Power supply: ... . Accuracy of temperature control: ±2 centidegree5. Water level grade: 5 grades 0,20,50,80 ... 0.02Mpa~0.8Mpa,apply to direct water supply.Working pressure of no pressure valve ... water supply from water tank or low water pressure.10. Low power of color LCD screen:0.5W Solar water heater controller BL ...