https://devzone.nordicsemi.com/f/nordic-q-a/19565/power-consumption-nrf52Hi, I am trying to figure out the best way to save power on the nrf52. I need to connect with ble about two times per day. The ble should &#39;woken up&#39; by an accelerator (probably ADXL362), connect, send a small packet, and then go back to sleep. Whenen-USTelligent Community 13Wed, 08 Feb 2017 13:35:18 GMThttps://devzone.nordicsemi.com/thread/76096?ContentTypeID=1Wed, 08 Feb 2017 13:35:18 GMT137ad170-7792-4731-bb38-c0d22fbe4515:627e1cf0-905d-401a-93da-e097bc9e8479Sigurd<p>Hi,</p> <p>This is a documentation bug. The correct value for <em>System OFF, No RAM retention, Wake on GPIO</em> is <strong>0.3 μA</strong>. i.e. the same value as <em>System OFF, No RAM retention, Wake on reset</em>. In order to save as much power as possible <em>System OFF with NO RAM retention</em> mode is recommended.</p> <p>You can configure a pin to wake up the chip from SYSTEM OFF like this:</p> <pre><code>nrf_gpio_cfg_sense_input(YOUR_PIN_NUMBER, NRF_GPIO_PIN_PULLUP, NRF_GPIO_PIN_SENSE_LOW); </code></pre> <p>Use the function <code>sd_power_system_off()</code> to go to SYSTEM OFF mode.</p> <p>When the pin goes low, it will generate a signal that will wake up the chip. You can read more about System OFF mode <a href="https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.nrf52832.ps.v1.1/power.html?cp=2_2_0_17_1#unique_863354678">here</a>.</p><div style="clear:both;"></div>