Product Name: Non Pressure Solar Water Heater Solar Controller Model NO.: WB-SR501 Rated Voltage: AC 110-240V Application: Collector Controller, Water Heater Controller, Solar System Controller, Thermal Controller Certification: CE Condition: New Transport Package: Cartons Specification: 160x110x82mm Origin: China Product Description ApplicationsThe Apricus SR501 controller is used for the non-pressurized solar water heater system, which can provide an auto cold water filling and electric backup heating controling.It includes in the following items:1. A controller2. A multiple water leveland temperature sensor (with cable of 20m)3. A solenoid valveTechnical Specifications1.Dimension:205mmX150mmX50mm2.Power supply:AC100-240V,50Hz3.Accuracy of temperature measuring:±2ºC4.Range of tank temperature measuring:0~99ºC5.Accurancy of temperature control:±2ºC6.Power for water loading:≤200W7.Power for self heating cable:≤600W8.Power for heating element:≤1500W /3000W(Two model number can be choice)9.The electromagnetic valve: DC12V/ AC220V,(Optional pressure valve and low pressure valve)*Pressure valve working pressure: 0.02Mpa~0.8Mpa (For direct water supply)*Low-Pressure valve working pressure: 0.0Mpa(Water supply by water tank or low water pressure)Basic System Schematic