Feature: 1. WITH WIRING DIAGRAM: Insulation resistance meter internal cover is marked with wiring diagram, no longer have to worry about not wiring, very humanized design 2. WATERPROOF AND PREVENT KNOCK: Insulation tester outer box adopt waterproof design, waterproof and shock proof after close the cover, easy to store, hard shell is knock resistant, more convenient to use 3. HIGH DEFINITION DISPLAY: Insulation resistance tester with high definition LCD screen, clear at a glance, all functions on the same screen display, with rich color design, looks very comfortable 4. UPLOAD FUNCTION: The earth ground resistance tester can upload the stored test data to the computer through the USB communication cable 5. POWER DISPLAY: Earth ground resistance clamp tester with battery power display, when the battery is low to remind timely charging Specification: Item Type: Insulation Resistance Meter Model: ETCR3500 Insulation Resistance Range: 0.005MΩ~5.0TΩ Short Circuit Current: 5mA maximum Range: AC: 0V-700V; Accuracy: ± 5% rdg ± 3v Power Supply: 1 x Rechargeable lithium battery 5200mAh Polarization Index Test: Yes Absorption Ratio Test: Yes Capacitance Test Range: 10nF~25uF: Accuracy ±10%rdg±10nF Current Test Range: 0.01nA~7mA; Accuracy ±5%rdg±0.5nA User Defined Setting Time: 10s-3600s Test Timer: Automatically record the test time, ranging from 0s to 9999s Upload Function: Upload the stored test data to the computer through the USB communication cable Battery Power Display: There is a battery power display, reminding the battery to charge in time when the battery is low Automatic Shutdown Function: Automatic shutdown after power on 15 minutes Protection Level: Close lid IP65, open lid IP40 Working Environment: -20℃~50℃; 80%rh Storage Environment: -25℃~65℃; 80%rh Insulation Resistance: 50MΩ(1000v) (between test line and housing) Suitable Safety: AC 3kV 50Hz 1min (between test circuit and housing). Package List: 1 x Insulation Resistance Tester1 x Power Plug1 x Adapter1 x USB Cable3 x Test Line1 x Measuring Pen1 x Crocodile Clip1 x Hook1 x Cloth Bag1 x User Manual1 x Accessory