DUOYI Car Leakage Current Clamp Meter DC Tester 1. Automatic ACDC shifting: automatically identify ACDC signals, no need to manually switch ACDC gears 2. One-key zeroing: press (zero adjustmentbacklight key) to zero 3. Backlight display mode: 4-digit LCD display (with backlight) long press (zero adjustmentbacklight) to switch 4. Test method: clamp non-contact measurement 5. Range: 0mA~60A ACDC 6. Resolution: 1mA ACDC 7. Sampling rate: 2 timessecond 8. Frequency response: AC:45Hz~400Hz 9. Jaw size: 16x18mm 10. LCD size: 35x21.5mm 11. Instrument size: 215x61x32mm 12. Shifting mode: automatic shifting 13. Line voltage: 600V and below line test 14. Data storage: 99 groups, press (SaveStoreReview key) to automatically store and automatically number the storage location for easy access 15. Data lock: press (SaveStoreReview key) to lock the screen data for easy viewing 16. Data review: long press (SaveStoreReview key) to enter data query, use (ZeroBacklight) and (SaveStoreReview) to scroll up and down, if you want to exit data review, long press (SaveStoreReview) 17. Overrange display: OL is displayed when the range is exceeded 18. Automatic shutdown: If no operation is performed for 5 minutes after the power is turned on, the LCD flashes. If the [Power key] is pressed, it will return to the normal test state, otherwise it will automatically shut down after flashing for 30 seconds 19. Low voltage display: When the battery voltage is too low to ensure the measurement accuracy, the battery symbol is displayed and the battery should be replaced immediately 20. Working current: max 20mA 21. Insulation strength: AC 3700Vrms (between the iron core and the box) 22. Power supply: 9V battery x1 (not included)