1.CE,CCC,SOLAR KEYMARK,SRCC,ISO9001-2000 2. ... 200W . 11.Suitable power electrical heating:1 relay for 1500W(1500w-4000w must be use SR802)12.Inputs ... : 4 sensors,13.1pcs*Pt1000 sensor (≤500oC) for collector (silicon cable≤280oC),14.3pcs*NTC10K, B3950 ... for circulation pumps or 3-way electromagnetic valve 16.Ambient temperature:-10oC ~ 50oC.17.Water proof grade: IP40. Double pipeline working station ...