The following explains using the smartphone app screen.
Turn on/off sound effects
In the case of the Gateway Panel, a “Pong” sound effect is played every time you operate the Gateway screen, but this can be turned off.
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Tap “Gateway Settings”.
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Tap the switch to toggle it.
The settings are now complete.
Gateway switches cannot be configured
The Gateway Switch does not have a sound effect function, so the “Sound Effects” item will not be displayed in the app.