Main Features 1.Measuring Range0.01-1200 2.Stored Data99 sets 3.Clamp Size64mm*32mm 4.Power Consumption:Maximum 50mA 5.Current range:0.00mA-20.0A Model No.: MEWOI3000D+ Name: MEWOI3000D+-0.01-1200/0.00mA-20.0A Clamp on Earth Resistance Tester/Meter,earth ground tester,GEO Tester Low Battery Indication: Low battery symbol displays when battery is lower then 5.3VPower Consumption Power consumption:Max 50mA either in booting up or normally working, Continuously working for 30 hours