https://devzone.nordicsemi.com/f/nordic-q-a/63353/wake-up-by-central-deviceHi, I know that a peripheral device can wake up from sleep by app_timer, but can a peripheral device whose power state is System ON IDLE be woken up by a scanner nearby ? Best Regardsen-USTelligent Community 13Fri, 03 Jul 2020 11:24:31 GMThttps://devzone.nordicsemi.com/thread/258291?ContentTypeID=1Fri, 03 Jul 2020 11:24:31 GMT137ad170-7792-4731-bb38-c0d22fbe4515:9a7964f0-487f-4347-9e03-353ed14c2f54OpenCircuit<p>Okay</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/258290?ContentTypeID=1Fri, 03 Jul 2020 11:21:53 GMT137ad170-7792-4731-bb38-c0d22fbe4515:1c3fbc82-3960-4c60-ba92-7d43de00ef08awneil<p>You&#39;re welcome.</p> <p><img alt=" " src="https://devzone.nordicsemi.com/resized-image/__size/320x240/__key/communityserver-discussions-components-files/4/3618._5F00_Verify_2D00_answer_2D00_nordic_5F00_2.png" /></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/258289?ContentTypeID=1Fri, 03 Jul 2020 11:19:03 GMT137ad170-7792-4731-bb38-c0d22fbe4515:0d6dfe01-0b16-4902-b7cd-01eaef8e6cbbOpenCircuit<p>Thank you Awneil. I guess I will continue with app_timer.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/258284?ContentTypeID=1Fri, 03 Jul 2020 10:41:00 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ee62e0a7-b0ab-4733-892d-cce4c879319cawneil<p>A scanner just <em>listens - </em>so the peripheral would have to be advertising.</p><div style="clear:both;"></div>