... conponents,such as voltage indicator,heater,short circuit and earth fault indicator,blocking magnet,Led light,voltage sensor,temperature ... and humidity controller,etcShort Circuit & Earth Fault Indicator DJ-3100General Information The short circuit & earth fault indicator DJ-3100 is used for ... 2hrs,4hrs Output relay : 120 V AC 1A, 30V DC 2ACutting hole dimension: 91*44mmMain controller dimension :95*50 ...