When 20% of battery life is left, the display flashes the low battery warning symbol, however, the device can still work until the battery life has 0% left. To change the batteries, please follow the below steps:
- Slide open the battery door. Insert 2 AAA batteries, correctly positioning with positive “+” and negative “-” as shown. Replace the battery door and close securely.
- Replace the batteries when the flashing battery symbol appears on the LCD screen. Dispose of batteries according to local waste management directions.