https://devzone.nordicsemi.com/f/nordic-q-a/116842/how-to-pair-matter-light-bulb-and-light-switch-over-thread-without-an-otbr-using-nrf52840&quot;I am working on a project involving Matter over Thread using the nRF52840 development kits. My goal is to pair and communicate between the light_bulb and light_switch Matter sample applications directly, without using an OpenThread Border Router (OTBRen-USTelligent Community 13Fri, 29 Nov 2024 13:21:34 GMThttps://devzone.nordicsemi.com/thread/512765?ContentTypeID=1Fri, 29 Nov 2024 13:21:34 GMT137ad170-7792-4731-bb38-c0d22fbe4515:2d06c619-66d1-4ad9-80f8-bb657171c316AHaug<p>Hi,</p> <p>This is technically possible, but it won&#39;t get you anywhere. You can subscribe to attribute reports without a OTBR/a hub, but if you want to control anything you need to edit access control, which requires a Matter controller (for instance the OTBR or a 3rd party commercial Matter compatible hub). What you in practice will get is a light switch that can listen to the state of the light bulb, but nothing more (which I hope you can agree is not very useful).</p> <p>In the Light bulb/switch sample this is done in step 6 here&nbsp;<a href="https://docs.nordicsemi.com/bundle/ncs-latest/page/nrf/samples/matter/light_bulb/README.html#bind_both_devices">https://docs.nordicsemi.com/bundle/ncs-latest/page/nrf/samples/matter/light_bulb/README.html#bind_both_devices</a>&nbsp;and see access control here:&nbsp;<a href="https://docs.nordicsemi.com/bundle/ncs-latest/page/matter/access-control-guide.html">https://docs.nordicsemi.com/bundle/ncs-latest/page/matter/access-control-guide.html</a>&nbsp;</p> <p>Kind regards,<br />Andreas</p><div style="clear:both;"></div>