You can set your iCT220/250’s keybeep to the following:
- Always on
 
- Always off
 
- On when the terminal receives an invalid entry
 
You can also set the terminal’s backlight to the following:
- Always off
 
- Always on
 
- On when keys are pressed
 
To enable or disable the keybeep or backlight, complete the following steps:
- To return to the home screen, press Clear (red button).
 
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