Main functions Display clock and week Display temperature Temperature difference circulation pumps provide three working scopes for choose Three periods timing heating Heat collector frost protection Memory function Water tank temperature setting Display the system pressure Technical data 1.Externality size: 445mm*200mm*145mm 2.Max. self consumption: 3W 3.Accuracy of temperature measuring: ? 4.Range of temperature measuring: 0~99 5.Power of controlled pumps (temperature difference circulation pump, water-using end circulation pump): <600W 6.Electronic booster power: 2000W 7.System working pressure: 0.6MPA 8.Input signal: 3 temperature sensors (for top of tank, for heat collector, for bottom of tank) 9.Output signal: 3 (electronic booster, temperature difference circulation pump and water-using end circulation pimp)