https://devzone.nordicsemi.com/f/nordic-q-a/87003/nrf-connect-sdk-1-8-0-idle-thread-modeHello, We are using nRF Connect SDK 1.8.0 with nRF52832. As per the nRF Connect Documentation, when there is no active task, idle thread is called. Could you let us know what is the idle thread sleep mode? (System OFF / system OFF + RAM Retentionen-USTelligent Community 13Tue, 19 Apr 2022 12:30:52 GMThttps://devzone.nordicsemi.com/thread/363574?ContentTypeID=1Tue, 19 Apr 2022 12:30:52 GMT137ad170-7792-4731-bb38-c0d22fbe4515:34a58616-fbe4-425b-a08c-5ffa5f52edb4Simonr<p>Hi</p> <p>The IDLE thread should put the device in CPU idle (system ON) with no RAM retention by default. So it should draw 1.2-1.9 µA depending on what wake up source is set (as long as no other peripherals are left running). You can also put it to system off with other sleep calls like what the<a href="https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/zephyr/samples/boards/nrf/system_off/README.html"> nRF5x System OFF demo</a> in Zephyr does.</p> <p>Best regards,</p> <p>Simon</p><div style="clear:both;"></div>