> For the complete documentation index, see [llms.txt](https://help.boomerang3.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.boomerang3.com/win-gateway-installation-manual/troubleshooting/cant-link-a-node-to-gateway.md). # Can’t link a node to gateway The most common reason of this problem is that the node is already linked to another gateway and must be unlinked or reset before it can be linked to another gateway. If you know which gateway it is linked to, you can simply place it near that gateway so it will pop up in the “Devices” menu after a whileand then unlink it. The other option is to perform factory reset of the node. In case of NWIN002, NWIN004 or NWIN005 (Pt100, 4-20mA or 0-10V) you can do a long-press on the small side mounted switch next to the LED. A long-press does a factory-reset, so node will become unlinked and return to the default 1-minute transmission interval. For NWIN001 or NWIN003 it is a little bit trickier to reset, as you must short two pads on the radio PCB, labeled “RST”. The sensor will detect the short when it wakes up for the next transmission. To speed this up, it is suggested to remove the batteries, wait 30 seconds (to drain capacitors), and then reinsert the batteries before shorting the pads. In both cases if the factory reset was successfull, the LED will start blinking rapidly, showing the node is in an unlinked state. --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://help.boomerang3.com/win-gateway-installation-manual/troubleshooting/cant-link-a-node-to-gateway.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.