Siemens Motion 701 BTE Manual page 15

Turning your hearing instrument on and off
Power-on delay
Your hearing instrument is equipped with a "power-on
delay" feature which can be activated by your Hearing
Care Professional. This allows you to turn the hearing
instrument on with an automatic delay of 6, 12 or 18
seconds, so that you may insert the hearing instrument
into your ear without experiencing unpleasant feedback
(whistling).
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