Feature: 1. Digital insulation resistance tester, with a 64x44mm LCD display, the maximum display is "1999". 2. Wide measuring range, with over‑range indication, only the highest digit displays "1" when over limit. 3. With data retention function, support test lock, stable performance and convenient operation. 4. Support automatic shutdown function (about 15 minutes after booting) to save battery power. 5. Suitable for insulation resistance testing of motors, cables, electromechanical equipment, telecommunications equipment, power facilities, etc. Specification: Condition: Brand New Item Type: Insulation Resistance Tester Material: ABS Display: 64x44mm LCD Display, Maximum Display "1999" Over-Range Indication: When the upper limit is exceeded, only the highest digit displays "1" Power Supply: 6x1.5V Dry Battery (Battery Not Included) Under-voltage indication when the voltage is insufficient Auto Power Off Function: About 15 minutes after power on Power Consumption: Test no-load power consumption <300mw Use Environment: Temperature: 0℃-400℃, Relative Humidity: 30%RH-85RH Basic Function Range Basic Accuracy Output Voltage 100V/ 250V/500V/1000V ±10% Test Current 100V (R=100kΩ) 1mA ±10% 250V (R=250kΩ) 1mA 500V (R=500kΩ) 1mA 1000V (R=1MΩ) 1mA Range Insulation 100V: 0.1MΩ-20MΩ ±(4% of Reading ±2 Digit) 250V: 0.1MΩ-20MΩ 500V: 0.1MΩ-50MΩ Resistance 1000V: 0.1MΩ—100MΩ 100V: 0.1MΩ—20MΩ ±(4% of Reading ±2 Digit) 250V: 20MΩ-500MΩ 500V: 50MΩ-1000MΩ 1000V: 100MΩ-2000MΩ Short Circuit Current 100V About 1.2mA, 250V/500V/1000V About 1.6mA Median Resistance 100V/250V/500V: 2 MΩ 1000V: 5MΩ Voltage Measurement AC750V ±(2% Reading + 5 Digit) Jacks Location Insulation Resistance: L, E AC750V: ACV, G AC750V Input Impedance: 1MΩ AC750V Frequency Response: (50-200) Hz Note: The median resistance guarantees that the voltage at both ends of the measurement is not lower than the lower limit of resistance measurement at 90% of the nominal value of the test voltage.. Package List: 1 x Insulation Resistance Tester (Battery Not Included)2 x Test Lead2 x Clip1 x Bag1 x Manual