1. [LCD Display] Clamp ground resistance meter adopts great black LCD screen and resistance current display in the same screen, 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 operation. 4. [Accurate and Reliable] Clamp ground resistance meter tester is with wide range, easy to carry, accurate, reliable, stable 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 Meter Model: ST4100 Battery: 1.5V AA Batteries x 4 (Shipped Without Batteries) Material: ABS Basic Parameters: Function: Grounding Resistance Test, Circuit Resistance Test Ambient Temperature And Humidity: 23℃±5 ℃, 75% Rh Below Measurement Mode: Mutual Inductance Mode Resistance Resolution: 0.001Ω Current Resolution: 0.01mA Clamp Jaw Size: 55 x 32mm / 2.2 x 1.3in Clock Function: With Ω And A Synchronous Display: Ω And A With The Screen Display Display Mode: 4 Digit LCD Display, Black Screen Design LCD Size: Approx. 46 x 36mm / 1.8 x 1.4in Measurement Time: 1 Time/Second Data Storage: 500 Groups, "MEM" Storage Indication, Flashing "MEM" Sign Indicates That The Storage Is Full. Data Access: "MR" Sign Indication When Accessing Data Overflow Display: "OL" Sign Indicates When The Overflow Is Over The Range Interference Test: Automatic Identification Of Interference Signal, "NOISE" Sign Indication When Interference Current Is Large Alarm Function: Alarm Prompt When The Measured Value Exceeds The Alarm Setting Value Battery Voltage: Realtime Display Of Battery Power Automatic Shutdown: Can Be Set To 5, 10, 15, 20 Minutes, OFF Several Ways, OFF Means Cancel Automatic Shutdown, The Default Is 5 Minutes.