Yamaha PW-SE Original Instructions Manual page 15

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Do not use the wireless function with Bluetooth low energy technology in areas
such as hospitals or medical institutions where use of electronic equipment or
wireless equipment is prohibited. Otherwise, this could affect the medical equip-
ment, etc. and cause an accident.
When using the wireless function with Bluetooth low energy technology, keep
the display at a safe distance from heart pacemakers in use. Otherwise, the radio
waves could affect the heart pacemaker function.
Do not use the wireless function with Bluetooth low energy technology near au-
tomatic control equipment such as automatic doors, fire alarms, etc. Otherwise,
the radio waves could affect the equipment and cause an accident through pos-
sible malfunction or unintentional operation.
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