Main functions: AH Afterheating or thermostat; Passwd protection; LOAD Tank heating OCEM emergency shutdown; OCCO cooling; OCMI minimum temperature OCFR Antifreeze; OTCO Tube ; PUMP Pump control mode; OSYC System cooling; OSTC Tank cooling; MAN Manual mode BLPR Blocking protection; OTDI Thermal Disinfection; UNIT C-F switch BEEP fault warning; Memy function; Screen protection; checking TECHNICAL DATA Size of Controller:178mm x120mm x43mm Power supply:AC100-240V,50-60Hz. Power consumption: Less than 2.5W Accuracy of temperature measuring: 0.1C Range of temperature measuring: -10C -220C Range of tank temperature measuring: 0C -110C Suitable power of pump: 1 pump possible to be connected, output power Less than 300W . Suitable power of (backup heating): 1pc 500W . Inputs: 3 senss, 1pcsPt1000 sens (500C) f (silicon cable280C), 2pcsNTC10K, B3950 sens ( 135C) f tank, (PVC cable 105C), Outputs:2 relays, f circulation pump backup heating temperature:-10C - 50C. Water proof : IP41 Plug Type:EU Plug,it applies to Indonesia, , , , so on Voltage: AC100-240V col:As shown Material:plastic Package Contents: 1 x SR208C Solar Water Heat Controller(Wifi) Only the above package content, other are not included. Note: Light reflection different displays may cause the col of the item in the a little different from the real thing. The measurement allowed err is 1-3cm.