# Purchase info ### [Click on this link to visit our store for purchasing this board.](https://www.valetron.com/store/valtrack-v4-vts-esp-32-c3-4g-lte-gps-tracker.html) ### Product variants * Without Enclosure * With Enclosure ### GNSS Antenna Selection * Internal Patch antenna * External antenna We offer the device with above options, You can order the device only if you want to use it in some other instrument along with other hardware or you can order the device with a IP67 enclosure. We also offer the device with internal GNSS patch antenna or external antenna. If you choose external antenna, we provide a SMA connector on the enclosure(if ordered) and add a bias resistor to power the external active antenna. Then you can connect a external antenna to the board via the U.FL connector. External GNSS antenna option is helpful when you want to install devices in places where there is no direct satellite view. In such cases you can use the external GNSS active antenna. --- # 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.valetron.com/wiki/products/valtrack-v4-mfw-esp32-c3/purchase-info.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.