On-line testing the leakage initiating time and line AC voltage of various leakage protector on site.. 1. Model No. : ETCR8600B 2. AC Voltage Gears : 0~600V 3. Rated Voltage : AC 220V 4. Leakage Current Operating Time Range : 0~999ms 5. Working Current : 365mA Max 6. Power Supply : 7.4V, rechargeable lithium battery (full about 8.4V)