Water Heater Controller (SPII) SPII is used in split solar water heater system Technical details 1. Dimension: 186*140*41mm2. Input voltage: 220V-240V AC or 100V-120V AC3. Power: <=5W4. Accuracy of temperature measuring: +-1 centigrade5. Range of temperature measuring: PT1000:0-199 centigrade NTC 10K: 0-99 centigrade6. Input signals: 1 * PT1000 sensor temperature probe <=500 centigrade, silicon cable <=280 centigrade; 3 * NTC10K sensor temperature probe<=135 centigrade, PVC cable <=105 centigrade2 * NTC10K, 1 * Flow sensor ( For selection)7. Output signals:1 * Auxiliary heating output (Max. load current: 12A) 3 * Relay output (Max. load current: 3A) 1*Adjustable output (Max. load current: 1.5A)8. TFT display9. Communication port: 1 * RJ4510. Range of environment temperature: -10-50 centigrade11. Water protection grade: IP40 Main functions 1.Display clock and week2.Temperature difference circulation3.Storage tank overheating protection4.Storage tank emergency cut-off5.Frost protection of collector and pipeline6.Adjustable of three time periods on Auxiliary heating7.Holiday function8.Anti-bacteria function9.Connect directly with the computer, switch or router to a home network access10. Web-based data configuration, heat calculating, look view history data, etc