Dolphin Proteus DX5i review

This is a document-based assessment of the U.S. Dolphin Proteus DX5i, Product No. 99996212-LSWIF—not a hands-on test. The exact Maytronics listing describes a corded cleaner for floor, wall and waterline cleaning in pools rated up to 50 feet, and identifies MyDolphin Plus and Wi-Fi connectivity. Its manual route did not return a product when checked, so model-specific safety, setup and care instructions remain open rather than borrowed from a nearby Dolphin.

What the exact listing supports

The manufacturer states a maximum pool length of 50 ft and lists floor, walls and waterline as cleaning coverage. It classifies this exact listing for in-ground and above-ground pools and names rectangular, round, free-form and kidney shapes. Those are useful boundaries for an initial shortlist, not a guarantee that the robot will suit every transition, slope, finish or waterline. The page does not give a minimum water depth, a step or sun-ledge depth, or a cable length. Its 50 ft pool rating must not be mistaken for tether reach or proof that an outlet and power-supply location will work in a particular yard.

The product image linked from this U.S. page visibly identifies the body as PROTEUS DX5i and shows an attached cable. The page also lists an anti-tangling swivel. Together these support a corded configuration, but they do not establish cable length, a particular cable-management result or a safe installation route. Follow the actual operating instructions for electrical placement before use; the exact-number support page currently says no products were found.

The app listing is the DX5i's clearest distinction

Maytronics lists MyDolphin Plus as the mobile application, marks Wi-Fi connectivity and describes the robot as always connected. That is a documented app-related difference from the separately listed Proteus DX4 99996207-LSWF, whose exact page says Mobile Application: No. The two full product numbers and page fields justify separate assessments; they do not prove that every internal component or supplied part differs. The DX5i page also says Remote Control: No, so the app label should not be stretched into a claim of live underwater steering. Since the linked manual route did not resolve, the app's exact functions, pairing steps and network requirements are not verified here.

The listed default cycle is two hours, the weekly timer is marked Yes and the delay feature is marked No. The page separately marks Automation Mode: Yes without defining what that means. I would not treat that undefined field as evidence for extra schedules, remote commands or a delay function. The listed pool-length cap, timer and app label each answer a different buying question.

Filter and cleaning details need a package check

The DX5i page names a Fine Filter Kit and top access, and describes an extra-large top-load basket. It also lists no full-filter indicator, an active brush, two standard brushes and a manufacturer-stated suction rate of 4,000 gallons per hour. That rate is a published figure, not a measurement from this review. The page shows Ultra-Fine filter products under Add-On Accessories, but does not establish that an Ultra-Fine kit is included with Product No. 99996212-LSWIF. A separate accessory tile is not a carton list. If finer filtration is essential, confirm the exact package before treating this model as a fit.

Maytronics lists a robot weight of 17.375 lb, net dimensions of 17.472 by 15.839 by 11.425 inches, and a two-year warranty. These are manufacturer-published values, not independently measured observations. A blank or unstated caddy/stand entry is not proof that a transport caddy ships in the box. The seller's precise SKU, package contents and applicable warranty should be checked against the product you are actually offered.

Who should keep it on the shortlist

The DX5i is a plausible document-based candidate when corded operation is acceptable, waterline cleaning is a requirement, the pool is within the listed 50 ft limit and a manufacturer-listed mobile application matters. It is not an evidence-backed answer for a buyer who requires a documented step-depth minimum, a known cable reach, a specified app action, or a confirmed in-box Ultra-Fine kit. An unknown is not a negative capability claim, but it also cannot satisfy an essential requirement in this research library.

For a comparison within the Proteus name, read the separate Proteus DX4 assessment: the DX4 page has the same broad 50 ft, floor/wall/waterline listing and Fine Filter Kit but says no mobile application. For a wider corded waterline comparison, the Nautilus CC Pro also lists MyDolphin Plus, but its different exact model number and package evidence must be checked on their own. None of these comparisons substitutes for the selected model's instructions or establishes real-world cleaning performance.

Bottom line

Judge the Proteus DX5i as the specific corded 99996212-LSWIF configuration: it has a published 50 ft pool limit, three listed cleaning surfaces and an app/Wi-Fi label that distinguish it from the DX4. Before choosing it, verify installation reach, step and depth compatibility, exact app behavior, included filter kit, caddy/stand and warranty with current model-matched documentation and the seller's carton details. The evidence reviewed here does not support a performance promise or a claim that the unreturned manual route has been solved.