WamBlee W400 Manuel D'instruction page 11

Deactivation
EN
To turning off your W400/W400EX it is necessary to rotate the knob (1)
clockwise, repositioning it to 'OFF'.
Press the push button (2) inwards to release the safety lock and then,
continuing to hold the push button down, rotate the knob clockwise until
the 'OFF' position is reached, then release the push button (2).
The device will be deactivated and stop emitting radio signals.
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