Keyestudio KS4028 Manual page 281

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(3)Test Results:
Upload the test code to the micro:bit, plug in power, dial the DIP switch to
ON and press"1"on the rocket switch.
The micro:bit will show a smile image.
When the PIR motion sensor detects people, the yellow LED will be on;
otherwise, the LED will be off.
(How to download? How to quick download?)
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