# Template ID Product's Template ID is used to check if new Device is allowed to work with the Product's settings. Follow these steps to allow the Device to use Product's Template you need: * select the Product, open Info tab and copy it's Template ID * in Arduino IDE Sketch find a string that contains "#define BLYNK\_TEMPLATE\_ID", change "TMPL0000" by pasting Template ID from the previous step **Note: the Device will be refused by the app if it's and Product's Template ID don't match** --- # Agent Instructions: 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: ``` GET https://docs.blynk.io/en/blynk.console/templates/info/template-ids.md?ask= ``` The question should be specific, self-contained, and written in natural language. 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.