Feature: 1. Compact Construction: The leakage switch tester integrates the latest technology into a compact, durable, simple to use and portable instrument 2. 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 maintenance 3. Tripping Current Measurement: Tripping time measurement. Contact voltage measurement. Loop resistance measurement 4. Specification: AC Phase Voltage measurement: 0V‑440V; Frequency measurement: DC, 45HZ‑65Hz; Test current multiplier: 0.5, 1, and 5 5. 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 port Specification: Item Type: Digital Insulation Resistance Tester Model: HT5910 Material: ABS Purpose: Circuit Detection Battery: 1.5V 8 x AA (Excluding) Basic Parameters: Maximum Common Mode Voltage: 600VAC RMS Display Mode: LCD Display Range Selection: Full Automatic Range Frequency Detection: Automatic Over Range Display: ">" Power Consumption: 100mW Storage Temperature: - 20℃ - 70℃ Operating Temperature: 0℃ - 40℃ Temperature Coefficient: for Temperatures Lower Than 18℃ or Higher Than 28℃, the Coefficient is Per (.c) x 0.05 x (Specify Accuracy) Storage Altitude: 12000m. Package List: 1 x Digital Insulation Resistance Tester1 x Test Connection Wire3 x Clip1 x USB Cable1 x User Manual1 x CD1 x Carrying Case Note: 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