--- product_id: 78472522 title: "Ultimate ATO - Complete 4-Sensor Aquarium Auto-Top-Off System" brand: "xp aqua" price: "70.28 DT" currency: TND in_stock: false reviews_count: 8 url: https://www.desertcart.tn/products/78472522-ultimate-ato-complete-4-sensor-aquarium-auto-top-off-system store_origin: TN region: Tunisia --- # Ultimate ATO - Complete 4-Sensor Aquarium Auto-Top-Off System **Brand:** xp aqua **Price:** 70.28 DT **Availability:** ❌ Out of Stock ## Quick Answers - **What is this?** Ultimate ATO - Complete 4-Sensor Aquarium Auto-Top-Off System by xp aqua - **How much does it cost?** 70.28 DT with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/78472522-ultimate-ato-complete-4-sensor-aquarium-auto-top-off-system) ## Best For - xp aqua enthusiasts ## Why This Product - Trusted xp aqua brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Description Ultimate in Protection, Ultimate in Versatility, Ultimate in Value!Features:World’s first 4-sensor ATOOne sensor for top-off detectionTwo sensors dual-stage overfill alarm w/ QST ProgrammingOne sensor for run-dry protection (also a first)Versatile installation with accessories includedEfficient DC Pump – StandardSocket switch for use with AC pumps (up to 10A)Solenoid valve for use with RO/DI systemsSuper precise water level controlSuper easy installation; plug-and-playNo programming or adjustments requiredWorks in complete darknessWhy Choose Ultimate ATO ?With TWO dual-optical sensors, the Ultimate ATO is the first ATO to include 4 sensors. The 4 sensors allow us to design a dual-stage overfill alarm that is less intrusive as well as a run-dry protection feature that prevents your sump from running dry: which is also a first.The Ultimate ATO’s versatility is also unmatched. An efficient DC pump is included for a standard installation. If you require a larger ATO pump for a remote sump installation, a Socket Switch is included that allows you to run a pump up to 10A (1000W). A solenoid valve is also included for aquariums that are topped off directly with an RO/DI system.We designed the Ultimate ATO to offer you the ultimate protection with the ultimate convenience!Model: UATO-400PSpecifications: Power Input : 100~240VAC 50-60HZDC Pump: Max. Head : 6.5ft (200cm)DC Pump Flow Rate : 74 gph (280lph)AC Switch Capacity : 100~240 VAC - 50~60 HzAC Switch Max. Load : 10 A / 2400 W @ 240 VACSolenoid Valve : Power : 6 W @ 12 VDCATO Sensor Max mounting thickness : 1/2” (12.7mm) ## Product Details - **Brand:** XP Aqua - **Material:** Acrylic - **Special Feature:** Lightweight - **Specific Uses For Product:** aquarium for fish - **Style:** Modern - **Color:** Black - **Included Components:** efficient DC pump, socket switch for use with AC pumps, solenoid valve for use with RO/DI systems, and unspecified accessories - **Vivarium Type:** Aquarium - **Manufacturer:** XP Aqua ## Images ![Ultimate ATO - Complete 4-Sensor Aquarium Auto-Top-Off System - Image 1](https://m.media-amazon.com/images/I/51v8dJ9VuwL.jpg) ![Ultimate ATO - Complete 4-Sensor Aquarium Auto-Top-Off System - Image 2](https://m.media-amazon.com/images/I/51s+4KF1mtL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ This is a great ATO *by H***S on January 10, 2020* I have multiple tanks and multiple ATOs. I've had this one for about a year and and really think its a great value. It works as described and has multiple safety features to avoid overfilling.The only change I'd make is the overfill alarm has no way to temporarily silence. This is an issue form because I use it in a small all in one tank with this is one of the chambers in the back. When I turn off the pump for feeding the back chamber temporarily over fills and the alarm goes off until the feeding is over. It would be great if this has some sort of feed mode to disable it for 10 minutes or so. Otherwise, a greta product. ### ⭐⭐⭐⭐ Great while it lasted *by D***N on October 2, 2023* Like others have mentioned, this is a great unit that seems to have a lifespan of 4-6 months. Mine died after 6 months of flawless operation. No warning...sensor went...luckily I was home and caught it.UPDATE: I did contact the company, their customer service is excellent...they immediately sent out another controller and sensor unit. ### ⭐⭐⭐⭐⭐ So far so good *by J***N on December 29, 2019* Just installed it yesterday, was a breeze. My only complaint is the "universal" bracket for the water line, it says for rim/rimless tanks, and it didn't fit the bezel around mine. Luckily I was able to put it in one of the dividers in my sump. All in all though, seems like a good product. I chose to spend more versus a cheaper alternative in the fear of the dreaded flood problem some people have talked about. With the 4 sensors though, i'm hoping that won't happen for me. --- ## 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.tn/products/78472522-ultimate-ato-complete-4-sensor-aquarium-auto-top-off-system](https://www.desertcart.tn/products/78472522-ultimate-ato-complete-4-sensor-aquarium-auto-top-off-system) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-04-25*