1. When the battery symbol appears on the display or the digital display is blurred, the battery must be replaced as soon as possible to ensure the accuracy of the measurement when the battery is low.
2. Unplug the battery cover (pull backwards directly)
3. Use sharp objects (such as toothpicks, ballpoint pen tips, etc.). ) Press down firmly from the edge of the battery plug, and the battery will pop out.
4. When replacing the battery, remove the old battery and install a new battery with the same button type. Note that the positive pole is facing upwards and install the battery cover to complete the operation.
