Specification: Condition: 100% Brand New Item Type: Earth Resistance Tester Material: ABS+Iron Color: As shown in the picture Function Ground resistance test, loop resistance test Power Supply 4x1.5V AA dry battery (not included) Resistance range 0.01-1200Ω Current range 0mA-20A Resistance resolution 0.001Ω Current resolution 0.05mA Data storage 99 groups Alarm threshold setting range Resistance: 1-199Ω Sound-light alarm "Beep--beep--beep--" alarm sound, the alarm symbols flashes, press the AL button to turn on, off, and set Interference signal recognition function “Beep--beep--beep--" prompt sound, NOISE symbols flashes Working temperature and humidity -20℃,-55℃,20% RH - 90% RH LCD 4-digit LCD digital display, length and width 47x28.5mm / 1.9x1.1in Jaw size 65x32mm / 2.6x1.3in Jaw opening size 32mm/1.26in Meter size 285x85x56mm / 11.2x3.3x2.2in(L x W x T) Protection class Double insulation Structure Clamp CT Package List: 1 x Earth Resistance Tester(Battery Not Included) 1 x Measuring Ring 1 x Aluminum Case 1 x Instruction Manual Note: 1. Please allow 1?2in error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.