Control water temperature and level inner ank Auto filling water, Connect electrical heater, much safe. Complete automatic Technical date1. Power ... measuring: 0~99 centidegree4. Accuracy of temperature control: ±2 centidegree5. Water level grade: 5 grades 0,20,50,80,100%6. The ... of no pressure valve:0.0Mpa,apply to water supply from water tank or low water pressure.10. Low power of color LCD screen ...