https://devzone.nordicsemi.com/f/nordic-q-a/33716/measuring-the-device-how-much-far-from-central-devicei want to measure the distane how much far the advertiser from observer by using RSSI valuesen-USTelligent Community 13Tue, 24 Apr 2018 10:40:12 GMThttps://devzone.nordicsemi.com/thread/129532?ContentTypeID=1Tue, 24 Apr 2018 10:40:12 GMT137ad170-7792-4731-bb38-c0d22fbe4515:2d54a8d2-df68-49dd-b0c8-624ab4dab000Prathap Reddy<p>i keep my advertisement interval as 100ms and power transmission level as 0 DB. just consider&nbsp; that there no obstacles. i want to measure the how far my device from central with RSSI value</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/129529?ContentTypeID=1Tue, 24 Apr 2018 10:35:26 GMT137ad170-7792-4731-bb38-c0d22fbe4515:475c5b44-4b19-412e-b014-6541e742d905Stian R&#248;ed Hafskjold<p>The RSSI just gives you a number for the signal strength. The signal strength depends on more parameters than just the distance. Obstacles like walls, windows etc., reflections, the location of the receiver/transmitter, if it&#39;s in a pocket, close to the skin, lying on a table, antenna design etc.. All in all this is just a matter of testing. Try and see if the RSSI values in an environment similar to where it&#39;s supposed to operate give you sufficient info to calculate the distance.&nbsp;</p><div style="clear:both;"></div>