Mitsubishi FREQROL FR-A024-1.5K

20. CONTROLLING KEY CLICK SOUND (TACTILE FEED BACK)
With the model FR-PUO3 parameter unit, a key click sound can be added to confirm complete
execution
of key stroke. To output key click sound, follow the procedure below.
Pr.990 is factory set to 0 for no key click sound.
.To change the setting to With key click sound", set '1" in Pr.990.
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Noto: To set 'no key clock sound' again, set Pr. 990 to "0" (factory- setting).
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