Specification: Item Type: Insulation Tester Material: ABS Color: As shown in the picture Model: ETCR3500 Product Rated Voltage: 50V, 250V, 500V, 1KV, 2.5KV, 5KV Output Voltage Accuracy: (5%~10%) ±10V Insulation Range: 0.005MΩ~5.0TΩ Short Circuit Current: >5mA Functions: Insulation test (IR), polarization index test (PI), absorption ratio test (DAR), filter function (4 time selections 10S, 20S, 30S, 40S), voltage test (V), capacitance test ( uF), current test (nA). Power Supply: Rechargeable lithium battery 5200mAhx1 (built-in battery) Adapter: AC110~240V Polarization Index Test: Support Absorption Ratio Test: Support Ramp Test Mode: Take 10% of the preset voltage as a step amount to test until the preset voltage Filter Test Mode: 10S, 20S, 30S, 40S four options How to Use: Get the product, open the upper cover, the user can select the measurement range, rotate the selection, connect the measurement line, you can measure, there is a power line control to the product screen, connect the adapter to . With a USB interface, data can be imported into the computer. The is simple and practical, and it is more comprehensive than the insulation tester on the market. Package List: 1 x Insulation Tester 1 x Power Plug 1 x Adapter 1 x USB Cable 3 x Test Line 1 x Measuring Pen 1 x Clip 1 x Hook 1 x Accessory 1 x Cloth Bag 1 x Instruction Manual