Main functions: AH Reheating / thermostat; Password protection; LOAD Tank heating OCEM Collector emergency stop; OCCO Collector cooling; OCMI Collector minimum temperature OCFR antifreeze; OTCO pipe collector; PUMP Pump control mode; OSYC system cooling; OSTC Tank Cooling; MAN Manual mode BLPR Blocking Protection; OTDI thermal disinfection; UNIT C-F switch BEEP error warning; Memory function; Screen Protector; Control TECHNICAL DATA Size of controller: 178mm x120mm x43mm power supply: AC100-240V, 50-60Hz. Power consumption: Less than 2.5W Accuracy of temperature measurement: 0.1C Collector temperature measurement range: -10C ~ 220C Tank temperature measurement range: 0C ~ 110C Suitable pump power: 1 pump possible to connect, output power Less than 300W. Suitable power of (reserve heat): 1st 500W. Inputs: 3 sensors, 1pc*Pt1000 sensor (500C) for collector (silicon cable 280C), 2pcs*NTC10K, B3950 sensor (135C) for tank, (PVC cable 105C), Outputs: 2 relays, for circulation pump and backup heating temperature: -10C ~ 50C. Waterproof grade: IP41 Plug Type: EU plug, it applies to Indonesia, , , and so on Voltage: AC100-240V color: As shown Material: plastic Package Contents: 1 x SR208C Solar Water Heat Controller Only the above package contents, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The permissible measurement error is +/- 1-3cm.