Economic model, Features operating high alarm & low alarm selectable control output relay 2 relay accessible based on requirement the new version updated 4, 4 digits display industrial level of emc test & increased trustworthiness input current up to 20005/ ct selectionoutput relay reating 1co, 7 amp. 230 volt ac required power source voltage 230v ac, 10%, 50hzaccuracy 1% of fsd enclosure material polycarbonate, Abs plastic operating temperature 0 c, 55 c relative moisture levels reaching as high as 95% relative humidity non-condensing model 30 amp/50 amp/100 amp/200 amp direct available