--- product_id: 401075647 title: "BASE-U-4 Optic USB Base Station" brand: "onset" price: "€ 392.29" currency: EUR in_stock: true category: "Hobo By Onset" url: https://www.desertcart.at/products/401075647-base-u-4-optic-usb-base-station store_origin: AT region: Austria --- # Splash-resistant design Infrared data transfer Universal USB connectivity BASE-U-4 Optic USB Base Station **Brand:** onset **Price:** € 392.29 **Availability:** ✅ In Stock ## Summary > 📡 Stay connected, stay ahead — the ultimate optic USB base station for pros on the move! ## Quick Answers - **What is this?** BASE-U-4 Optic USB Base Station by onset - **How much does it cost?** € 392.29 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.at](https://www.desertcart.at/products/401075647-base-u-4-optic-usb-base-station) ## Best For - onset enthusiasts ## Why This Product - Trusted onset brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Seamless Data Offload:** Effortlessly transfer data from any HOBO optic USB logger with universal compatibility. - • **All-in-One Coupler Kit:** Includes couplers for six popular HOBO logger types—no extra purchases needed to get started. - • **Infrared Communication:** Cutting-edge infrared protocol keeps your loggers sealed and waterproof while maintaining fast data transfer. - • **Plug & Play USB Interface:** Connects instantly to any desktop or laptop via USB for hassle-free setup and operation. - • **Splash-Resistant Durability:** Built to withstand splashes, ensuring reliable performance in demanding environments. ## Overview The HOBO BASE-U-4 Optic USB Base Station is a splash-resistant, universal data offload hub that connects HOBO optic USB data loggers to your computer via USB. Featuring infrared data transfer technology, it keeps loggers sealed and waterproof while enabling fast, reliable communication. Compatible with multiple HOBO logger series and including all necessary couplers, it’s the professional’s choice for seamless environmental data management. ## Description HOBO by Onset BASE-U-4 Optic USB Base StationThe Universal Optic USB Base Station and couplers are used to offload data from any HOBO data logger with an Optic USB interface. The splash-resistant Optic USB Base Station connects to your computer via USB, while connecting to the data logger via an appropriate coupler. This is compatible with the HOBO UA, U20, U22, U23, UTBI, U24 & U26 series.The Optic USB Base Station allows communication between the host computer and HOBO optic loggers. The base station uses infrared light to transfer data, which allows loggers to be completely sealed and waterproof. The Optic USB Base Station converts the USB communication protocol into an infrared protocol used by the optic USB loggers.A coupler is required to connect the logger to the base station. Refer to the documentation that came with your logger for the part number of the correct coupler.NOTE: Couplers for all compatible data loggers are included with the BASE-U-4. Couplers are included for compatibility with six of our most popular data logger types including: UA Pendants, U20 water level data loggers, the U22 Water Temp Pro v2, our UTBI TidbiT, U24 Conductivit,y and U23 data loggers. ## Features - Universal Optic-USB Base Station - Offload data from any HOBO data logger with an Optic USB interface - The splash-resistant Optic USB Base Station connects to your computer via USB - Compatible with the HOBO UA, U20, U22, U23, UTBI, U24 & U26 series ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00UZED8BY | | Brand | HOBO by Onset | | Compatible Devices | Desktop, Laptop, Personal Computer | | Compatible devices | Desktop, Laptop, Personal Computer | | Hardware Interface | USB | | Hardware interface | USB | | Item Weight | 0.01 Ounces | | Item weight | 0.01 Ounces | | Manufacturer | Onset Computer Corporation | | Mfr Part Number | BASE-U-4 | | Model Number | BASE-U-4 | | Number of Ports | 1 | | Number of ports | 1 | | Total USB ports | 1 | | Total Usb Ports | 1 | ## Product Details - **Brand:** HOBO by Onset - **Hardware interface:** USB - **Compatible devices:** Desktop, Laptop, Personal Computer - **Total USB ports:** 1 - **Number of ports:** 1 ## Images ![BASE-U-4 Optic USB Base Station - Image 1](https://m.media-amazon.com/images/I/31-sfgABT6L.jpg) ## Questions & Answers **Q: Does it come with couplers (such as coupler2a)? i need it to be connected to a hobo light data logger (ua-002-64).** A: Yes, it comes with couplers for all devices. **Q: does it work with RG3-M** A: Yes. The HOBO Pendant Event Logger that is inside the RG3-M can be read or downloaded with the BASE-U-4 or U-D-TW-1. InspectorTools Customer Service **Q: Ya incluye envío gratis ?** A: We offer free shipping to any US address --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.at/products/401075647-base-u-4-optic-usb-base-station](https://www.desertcart.at/products/401075647-base-u-4-optic-usb-base-station) --- *Product available on Desertcart Austria* *Store origin: AT* *Last updated: 2026-07-08*