How to replace the battery of digital high voltage meter

　　Turn on the low voltage display meter. If the LCD display is fuzzy or unresponsive, it means that the battery voltage inside the meter is low and needs to be replaced. The specific steps are as follows:

　　1. Press the Power switch to turn off the power of the low voltage display meter.

　　2. Unscrew the four screws on the low-voltage display panel and lift the panel.

　　3. Unscrew the screws on the battery box, open the battery box cover, and replace the 9V battery (pay attention to the positive and negative polarity of the battery).

　　maintenance:

　　1. When the instrument is not in use, it should be packed and sealed in a cool and dry place.

　　2. It should be sent to the superior metrology and verification department for calibration at least once a year, or returned to the factory for calibration.