: Slide down the tab on the back of the remote and lift off the cover. Insert two AAA batteries , matching the positive (+) and negative (-) polarity symbols inside the compartment.
If the reading is slightly off, use the calibration offset setting to adjust the sensor reading. 5. Troubleshooting (ZN-401s Manual Maintenance) zn-401s manual
The LCD screen typically displays the following: : Slide down the tab on the back
Press MODE to cycle through: