Features 1、The resistance threshold value of sound and light alarm and stored data is 99 units, lower power consumption and easier operation. 2、When measuring a grounding system with loops, there is no need to disconnect the ground down conductor, and no auxiliary electrode is needed, which is fast and reliable. 3、It is widely used in ground resistance measurement and loop resistance measurement of electric power, telecommunications, meteorology, oil field, construction and industrial electrical equipment. 4、It adopts LCD screen and high‑definition digital display, which is convenient to read the measurement results and easy to use. 5、Made of high‑quality ABS+iron material, it is wear‑resistant and durable, not easy to damage, and has a long service life. Specification Condition: Brand New Item Type: Clamp Meter Material: ABS + Iron Function Ground Resistance Test, Loop Resistance Test Power Supply 4 x 1.5V AA Dry Battery (Battery Not Included) Resistance Range 0.01-1200Ω Resistance Resolution 0.001Ω Data Storage 99 Groups Alarm Threshold Setting Range Resistance: 1-199Ω Sound and Light Alarm Beep-beep-beep alarm sound, the alarm sign flashes, press the AL button to turn on, off, and set Interference Signal Recognition Function Beep-beep-beep prompt sound, NOISE sign flashing display Working Temperature and Humidity -20℃-55℃;20%RH-90%RH LCD Display 4-Digit LCD Digital Display, Size: Approx. 47 x 28.5mm/1.9 x 1.1in Clamp Mouth Diameter Approx. 32mm/1.3in Clamp Meter Size Approx. 260 x 95 x 68mm/10.2 x 3.7 x 2.7in Protection Level Double Insulation Structural Features Clamp-on CT Gear Shift Full Automatic Gear Shift External Magnetic Field <40A/m External Electric Field <1V/m Single Measurement Time 0.5S Resistance Measurement Frequency >1KHz Measured Current Frequency 50/60Hz Automatic Battery Voltage Low Indication Function When the battery voltage is lower than 5.3V, the battery voltage low sign is displayed Stored Data Full Indication Stored data is full of 99 groups, flashing MEM sign Over-Range Indication Over-range indication OLΩ, L0.01 or OL A Automatic Shutdown The meter will automatically shutdown after about 5 and a half minutes Power Consumption Start-up, working current is less than 50mA, working continuously for about 30 hours Package List 1 x Clamp Meter (Battery Not Included) 1 x Measuring Ring 1 x Aluminium Box 1 x Instruction