Parts Description Power connector Handle Communication connector RS-232C type 1 pc. RS-485 type 2 pcs. Alarm connector External temperature sensor connector Handle Display/Operation panel Power switch Tank lid with gasket Circulating fluid level gauge Circulating fluid outlet Filter Circulating fluid inlet Drain (circulating fluid drain port) HEC002 HEC006 Power connector Handle Communication connector RS-232C type 1 pc. RS-485 type 2 pcs. Alarm connector External temperature sensor connector Handle Display/Operation panel Power switch Tank lid with gasket Circulating fluid level gauge Circulating fluid outlet Filter Circulating fluid inlet Drain (circulating fluid drain port) Series HEC-A 1388