Feature:1. Compact Construction: The leakage switch tester integrates the latest technology into a compact, durable, simple to use and portable instrument2. Function: Can measure tripping current, tripping time, loop resistance and on line voltage and frequency measurement of leakage switch. It is an ideal tool for electrical inspection and maintenance3. Tripping Current Measurement: Tripping time measurement. Contact voltage measurement. Loop resistance measurement4. Specification: AC Phase Voltage measurement: 0V‑440V; Frequency measurement: DC, 45HZ‑65Hz; Test current multiplier: 0.5, 1, and 55. Features: Electrical test position: 10,30,100,300,500 mA; Can store 1000 groups of test results; The data stored on the host can be uploaded to a PC through the USB2.0 portSpecification:Item Type:Digital Insulation Resistance TesterModel: HT5910Material: ABSPurpose: Circuit DetectionBattery: 1.5V 8 x AA (Excluding)Basic Parameters:Maximum Common Mode Voltage: 600VAC RMSDisplay Mode: LCD DisplayRange Selection: Full Automatic RangeFrequency Detection: AutomaticOver Range Display: >Power Consumption: 100mWStorage Temperature: - 20℃ - 70℃Operating Temperature: 0℃ - 40℃Temperature Coefficient: for Temperatures Lower Than 18℃ or Higher Than 28℃, the Coefficient is Per (.c) x 0.05x (Specify Accuracy)Storage Altitude: 12000mPackage List:1 xDigital Insulation Resistance Tester1 x Test Connection Wire3 x Clip1 x USB Cable1 x UserManual1 x CD1 x Carrying CaseNote:1.To avoid electric shock or injury, replace the battery when the battery is undervoltage. When replacing the battery, switch the instrument to the shutdown position, disconnect the instrument test cable from the tested circuit, and remove it from the instrument2.The device is delivered without batteries