Feature:1. [LCD Display] Clamp ground resistance meter adopts great black LCD screen and resistance display, but also with realtime clock, data storage, data access, alarm, automatic shutdown and other functions.2. [Data Storage and Data Upload] The clamp type grounding resistance tester is controlled by a microprocessor and can accurately detect grounding resistance. Uses fast filtering technology to minimize interference. At the same time, data storage and data upload functions.3. [Shockproof and Dust Proof] LCD clamp ground resistance tester is with shockproof, dust proof structure. High resolution, convenient to operate.4. [Accurate and Dependable] Clamp ground resistance meter tester is with wide range, easy to carry, accurate, dependable performance, strong anti interference ability.5. [Wide Use] Clamp ground resistance meter is commonly used in telecommunication, electric power, meteorology, computer room, oil field, mechanical and electrical installation and maintenance, and industrial enterprise sectors that use electricity as industrial power or energy.Specification:Item Type: Clamp Ground Resistance MeterModel: ST4100 Battery: 1.5V AA Batteries x 4 (Shipped Without Batteries)Material: ABSBasic Parameters:Function: Grounding Resistance Test, Circuit Resistance TestAmbient Temperature And Humidity: 235 , 75% Rh BelowMeasurement Mode: Mutual Inductance ModeResistance Resolution: 0.001Clamp Jaw Size: 55 x 32mm / 2.2 x 1.3inClock Function: WithDisplay Mode: 4 Digit LCD Display, Black Screen DesignLCD Size: Approx. 46 x 36mm / 1.8 x 1.4inMeasurement Time: 1 Time/SecondData Storage: 500 Groups, "MEM" Storage Indication, Flashing "MEM" Sign Indicates That The Storage Is Full.Data Access: "MR" Sign Indication When Accessing DataOverflow Display: "OL" Sign Indicates When The Overflow Is Over The RangeInterference Test: Automatic Identification Of Interference Signal, "NOISE" Sign Indication When Interference Current Is LargeAlarm Function: Alarm Prompt When The Measured Value Exceeds The Alarm Setting ValueBattery Voltage: Realtime Display Of Battery PowerAutomatic Shutdown: Can Be Set To 5, 10, 15, 20 Minutes, OFF Several Ways, OFF Means Cancel Automatic Shutdown, The Default Is 5 Minutes..Package List:1 x Clamp Ground Resistance Meter1 x Accessory1 x Manual1 x Storage Box