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Main technical data: (Type:SP*3) 1) Dimensions: **0mm x **5mm x *8mm 2) Self power consumption: <3W 3) Measuring accuracy of temperature: ±2oC 4) Temperature range of measurement: 0 ~ **0oC 5) Max. power of controlled circulation pump: possible to control 4 pumps, every power &#***4;**0W 6) Power of auxiliary electrical booster: &#***4;2,**0W (standard collocation), &#***4;3,**0W (not standard, optional) 7) Input: 6 , Pt****0 for collector, sensor temperature &#***4;**0oC, (silicon cable &#***4;**0oC) NTC*0K, B=***0 for tank, sensor temperature &#***4;**5oC (PVC cable &#***4;**5oC) 8) Output: 5 output, one for electrical booster, 4 for circulation pump (or *-way electromagnetic valve) 9) Ambient temperature range: **0 ~ **0oC *0) Water protection grade: IP*0 Main technical data: ( type:SP*4 ) 1) Dimensions: **0mm x **0mm x *8mm 2) Self power consumption: <3W 3) Measuring accuracy of temperature: ±2°C 4) Temperature range of measurement: 0~*9°C 5) Power of temperature difference controlled circulation pump: &#***4;**0W (p1) 6) Power of time controlled circulation pump: &#***4;**0W (p2) 7) Power of auxiliary electrical booster: &#***4;2,**0W (standard collocation), &#***4;3,**0W (not standard, selection available) Packing: Carton If you are interested in our product, please don't hesitate to sent mail to me.