Feature:1. LCD DISPLAY: The resistance meter adopts a black screen design, with resistance current displayed on the same screen. Multi functions such as real time clock, data storage, data retrieval, alarm, and automatic shutdown.2. EXCELLENT PERFORMANCE: The resistance tester has the advantages of wide range, high resolution, convenient operation, accuracy, reliability, stable performance, and strong anti interference ability.3. GROUNDING RESISTANCE TEST: Mainly applicable to measuring the grounding resistance of various telecommunications, power, meteorology, computer rooms, power distribution lines, tower transmission lines, gas stations, factory grounding grids, etc.4. HIGH ACCURACY: The clamp type grounding resistance tester is controlled by a microprocessor and can accurately detect grounding resistance. Uses fast filtering technology to minimize interference. Simultaneously storing and uploading data.5. APPLICABLE FIELD: This clamp meter is a commonly used for industrial enterprise departments in telecommunications, electricity, meteorology, computer rooms, oil fields, electromechanical installation and maintenance, as well as the use of electricity as industrial power or energy.Specification:Item Type: Ground Resistance Tester Mode: ETCR2100C+Material: ABS Battery: 1.5V AA battery x 4 (shipped without battery)Basic Parameters:Function: Grounding resistance test, circuit resistance test, leakage current testResistance Range: 0.01 to 1200 Current Range: 0-20ACurrent Resolution: 0.05maResistance Resolution: 0.001 Data Storage: 99 setsAudible and Visual Alarm: "beep beep beep" alarm sound, press the AL key to turn on and offAlarm Threshold Setting Range: Resistance: 1-199 Current: 1-499mAWorking Temperature and Humidity: -20 to 55 ; 10% RH to 90% RHLCD Display: 4 digit LCD digital displayDisplay Size: Approx. 47 x 28.5mm / 1.85 x 1.12in(L x W) Jaw Size: Round jaw diameter Approx. 32mm / 1.26inOpening Size of Jaw: Long jaw Approx. 32mm / 1.26inClamp Size: Long jaw Approx. 260 x 90 x 56mm / 10.24 x 3.54 x 2.2inProtection Level: Double insulationStructural Features: Clamp shaped CTGear Shifting: Fully automatic shiftingExternal Magnetic Field and Electric Field: Less than 40A/m; Less than 1V/mSingle Measurement Time: 0.5 secondsResistance Measurement Frequency: Greater than 1KHzTested Current Frequency: 50 60Hz automatic.Package List:1 x Tester 1 x Accessory 1 x Manual 1 x Storage Box