Feature: 1. WIRING INSTRUCTIONS: The inner covers are marked with wiring diagrams, so there's no need to worry about not connecting anymore. Very user friendly design. 2. WATERPROOF TANK DESIGN: The outer box is designed as a waterproof box, with a closed lid that is waterproof and shockproof. Easy to store, has a hard shell, is resistant to bumps, and is more user friendly. 3. HD LCD DISPLAY: Resistance meter can be seen at a glance, with all functions displayed on the same screen and rich color design, making it look very comfortable. 4. ABS MATERIAL: Made of premium ABS material, this resistance tester kit is wear resistant and scratch resistant for long term use. 5. LOW BATTERY INDICATOR: The resistance tester features a low battery indicator so that you can ensure your tester is always charged and able to use. There is also an automatic shutdown function to save power. Specification: Item Type: Digital Resistance Tester Material: ABS Mode: ETCR3520 Rated Voltage: 50V, 250V, 500V, 1KV, 2.5KV, 5KV Output Voltage Accuracy: (5% to 10%) ± 10V Insulation Resistance Range: 0.005M Ω to 10.0T Ω Short Circuit Current: Greater than or equal to 7mA Voltage Test Range: DC: 0V-800V; Accuracy: ± 5% rdg ± 3v AC: 0V-700V; Accuracy: ± 5% rdg ± 3v Working Power Supply: Rechargeable lithium battery 6200mAh x 1 (shipped with built in battery) Adapter Plug: AC100-240V Polarization Index Test: Yes Absorption Ratio Test: Yes Ramp Test Mode: Test in steps of 10% of the preset voltage until the preset voltage is reached Filter Test Mode: four options: 10S, 20S, 30S, 40S Voltage Test Range: AC DC: 0V-1000V; Accuracy ± 5% rdg ± 3V Capacitance Testing Range: 10nF-200uF, accuracy ± 10% rdg ± 10nF Real Time Current Display Test Current Value, Current Display Range: 0.001nA-7.5mA Voltage Monitor: Monitors the voltage of the tested object, monitors the discharge status after testing, and prohibits testing when the voltage is greater than 36V to defend instruments and operators Custom Setting Time: 10s to 3600s Test Timer: Automatically record test time, timing range 0s to 9999s Upload Function: Upload the stored test data to the computer through a USB communication cable. Battery Level Display: There is a battery level display, reminding timely charging when the battery voltage is low Automatic Shutdown Function: Automatically shut down after 15 minutes of power on Protection Level: Close the cover IP65, open the cover IP40 Working Environment: -20 ℃ to 50 ℃; 80% rh Storage Environment: -25 ℃ to 65 ℃; 80% rh Insulation Resistance: 50M Ω (1000v) (between the test line and the shell) Suitable Safety: AC 3kV 50Hz 1min (between test circuit and enclosure). Package List: 1 x Insulation Resistance Tester 1 x Power Plug 1 x Adapter 1 x USB Data Cable 3 x Test Line 1 x Measuring Pencil 1 x Crocodile Clip 1 x Hook 1 x Cloth Bag 1 x Manual 1 x Accessory