--- product_id: 30734812 title: "HOBO by Onset U20L-04 - Water Level (13 ft) Data Logger" brand: "onset hobo" price: "£413.22" currency: GBP in_stock: true category: "Onset Hobo" url: https://www.desertcart.co.uk/products/30734812-hobo-by-onset-u20l-04-water-level-13-ft-data store_origin: GB region: United Kingdom --- # 13 ft depth Fresh & saltwater Data logging HOBO by Onset U20L-04 - Water Level (13 ft) Data Logger **Brand:** onset hobo **Price:** £413.22 **Availability:** ✅ In Stock ## Summary > Dive into Data! 🌊 ## Quick Answers - **What is this?** HOBO by Onset U20L-04 - Water Level (13 ft) Data Logger by onset hobo - **How much does it cost?** £413.22 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/30734812-hobo-by-onset-u20l-04-water-level-13-ft-data) ## Best For - onset hobo enthusiasts ## Why This Product - Trusted onset hobo brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Durable Design:** Built to withstand both fresh and saltwater environments. - • **Effortless Deployment:** Self-contained non-vented design for quick setup. - • **Versatile Applications:** Perfect for wells, streams, lakes, wetlands, and tidal areas. - • **Real-Time Data Insights:** Capture and analyze water levels with precision. - • **Robust Depth Capability:** Accurate readings up to 30 feet deep. ## Overview The HOBO by Onset U20L-04 is a cutting-edge water level data logger designed for both fresh and saltwater environments. With a self-contained non-vented design, it allows for easy deployment and accurate measurements up to 30 feet deep, making it ideal for various applications including wells, streams, lakes, wetlands, and tidal areas. ## Description HOBO by Onset U20L-04 - Water Level (13 ft) Data Logger Accurate, affordable water level monitoring Water Level (13 ft) Data Logger Self-contained non-vented design enables easy deployment Durable ceramic pressure sensor withstands freezing Ideal for use in both fresh and saltwater environments, including wells, streams, lakes, wetlands, and tidal areas The HOBO U20L-04 is a low-cost, research-grade water level data logger for continuously measuring water level and temperature in a wide range of underwater environments. It features 0.1% measurement accuracy, a polypropylene housing for use in both fresh and salt water, and a non-vented design for convenient and hassle-free deployment. Note: A calibration certificate is not offered for this logger. If you require a NIST-traceable calibration certificate, please see the U20-001-04 (freshwater) or U20-001-04-Ti (saltwater). Important Info: This logger requires HOBOware Pro software and either a U-DTW-1 Waterproof Shuttle or the Base-U-4 Optic USB Base Station for configuration and data offload. U20 Series - Water Level Data Loggers U20-001-04 HOBO 13-Foot Depth Fresh Water Level Data Logger U20-001-04-Ti HOBO 13-Foot Depth Titanium Water Level Data Logger U20-001-01 HOBO 30-Foot Depth Fresh Water Level Data Logger U20-001-01-Ti HOBO 30-Foot Depth Titanium Water Level Data Logger U20-001-02 HOBO 100-Foot Depth Fresh Water Level Data Logger ## Features - Water Level (13 ft) Data Logger - Self-contained non-vented design enables easy deployment - Ideal for use in both fresh and saltwater environments, including wells, streams, lakes, wetlands, and tidal areas - Depths up to 30 feet - Durable ceramic pressure sensor withstands freezing ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00UZEL71W | | Best Sellers Rank | #4,709,834 in Clothing, Shoes & Jewelry ( See Top 100 in Clothing, Shoes & Jewelry ) #7,434 in Women's Hobo Handbags | | Brand | Onset HOBO | | Brand Name | Onset HOBO | | Color | Black | | Included Components | U20L-04 | | Item Weight | 0.4 Pounds | | Manufacturer | ONSET COMPUTER CORP | | Manufacturer Part Number | U20L-04 | | Material | Plastic | | Material Type | Plastic | | Model Number | U20L-04 | | Operation Mode | Automatic | | Style | Foldable UV/White Beam | | Style Name | Foldable UV/White Beam | | Unit Count | 1.0 Count | ## Product Details - **Brand:** Onset - **Material:** Plastic - **Color:** Black - **Style:** Standard - **Item Weight:** 0.4 Pounds ## Images ![HOBO by Onset U20L-04 - Water Level (13 ft) Data Logger - Image 1](https://m.media-amazon.com/images/I/41tXuPEadQL.jpg) ## Frequently Bought Together - HOBO by Onset U20L-04 - Water Level (13 ft) Data Logger - HOBO by Onset BASE-U-4 Optic USB Base Station --- ## 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.co.uk/products/30734812-hobo-by-onset-u20l-04-water-level-13-ft-data](https://www.desertcart.co.uk/products/30734812-hobo-by-onset-u20l-04-water-level-13-ft-data) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-05-16*