How to disable the sound of beeping when pressing the keys

Step 1: Long press ‘VALUE’ and ‘BATCH’ button at the same time to enter setting mode.

Step 2: Click the ‘BATCH’ button for multiple times to switch the parameter to ‘C30’.

Step 3: Click the ‘CUR’ button to switch the value to ‘0 PCS’

Step 4: Place a banknote in the hopper. The settings will be saved.