... controllerWidely used in temperature, humidity, throw, weight, water level, refrigeration ,pressure control system.Features: High accuracy and easy operation. Self diagnoses ... ,0~500mv,0~5V,1~5V,0~10V,0-10mA,4-20mA etc.Control modePID ; P, P+D, P+I ; ON/ ... outputRelay contacts 250V/3A (Resistive Load) ; SSR 8~12V ; 4~20mAAlarm channels2 channels alarm outputAlarm typesno alarm; lower deviation alarm ...