https://devzone.nordicsemi.com/f/nordic-q-a/57606/thingy-91-deep-sleep-firmware-for-nrf52840Hi, We plan to measure the sleep current of the *whole* Thingy 91 system including nRF9160, nRF52840 and sensors. Do you have a firmware (sample app or similar) that puts the nRF52850 in deep sleep (the MCU including all peripehrals, GPIOs etc) so ween-USTelligent Community 13Mon, 17 Feb 2020 15:23:34 GMThttps://devzone.nordicsemi.com/thread/234710?ContentTypeID=1Mon, 17 Feb 2020 15:23:34 GMT137ad170-7792-4731-bb38-c0d22fbe4515:af882a68-709e-412f-8fd3-aab9fdd7f445Stian R&#248;ed Hafskjold<p>Hi, sorry for the late reply. You can set the MCU to system OFF mode.</p> <p><pre class="ui-code" data-mode="c_cpp">void main(void){ NRF_REGULATORS-&gt;SYSTEMOFF = 1; for(;;){} }</pre></p> <p>It will now consume around 1uA</p><div style="clear:both;"></div>