Dolphin Proteus DX4 review

The Dolphin Proteus DX4 (Product No. 99996207-LSWF) is a corded cleaner listed for a maximum 50-foot pool length and floor, wall and waterline coverage. Maytronics lists both in-ground and above-ground pools. This is a source-based assessment, not a pool trial: a 50-foot pool rating is not cable reach, and a coverage label cannot promise contact with every surface or transition. The exact page-linked image shows a cable attached to a body marked PROTEUS DX4, which supports the corded classification but says nothing about the length of the tether.

Coverage and pool classification are useful starting points

The exact U.S. page gives the DX4 a 50-foot maximum and names floor, walls and waterline. It also lists rectangular, round, free-shape and kidney pools and classifies the model for both in-ground and above-ground pools. Those labels make it relevant when the cleaning brief includes the waterline or when a buyer needs a model listed for an above-ground pool. They do not supply a water-depth range, a material-specific surface rule or a qualified step-depth rating. The listed shapes are not a substitute for checking the exact pool geometry and manufacturer instructions.

Keep the pool-length figure separate from installation planning. The page does not state a cable length, so it cannot tell you whether the route from the approved power supply to your pool's far side will work. Measure the actual pool and cable route independently, and get model-matched guidance about power-supply placement, depth, steps and surfaces before relying on a fit.

Control labels do not amount to app control

Maytronics lists a two-hour default cycle, a weekly timer and no delay feature. Its technical table says Mobile Application: No and Remote Control: No. A separate row says Automation Mode: Yes but does not explain the mode, its controls or how it operates. It should not be translated into Wi-Fi, a phone app or live steering. The DX4 is therefore a poor candidate when documented app setup or status support is essential, even though the listed weekly timer may still matter to a simple schedule.

The listed filter package is basic, with no extra kit established

The exact page names a top-access Fine Filter Kit and says there is no full-filter indicator. Its model comparison table shows a dash for “Additional Filter in the Box.” Although the same product page displays filter accessories in a separate add-on section, those tiles are not evidence that an extra filter ships with the DX4. Buyers who need a finer option should confirm compatibility and the actual carton separately rather than assuming the accessory is bundled.

Maytronics lists two standard brushes, Active Brush: Yes, and a 4,000-gallon-per-hour suction-rate figure. Those are manufacturer specifications, not measured pickup results or a controlled comparison. The page also lists an 18.478-pound robot weight, net dimensions of 17.472 by 15.839 by 11.425 inches, package dimensions of 22.1 by 17.7 by 12.4 inches and a two-year warranty. These page values help frame storage and seller questions; they are not independent measurements or confirmation of a seller's current terms.

Exact suffixes separate similarly numbered Dolphin models

The DX4's number begins 99996207, but the full U.S. Product No. is 99996207-LSWF. That is different from the reviewed Dolphin Nautilus CC Pro, Product No. 99996207-PCI. The Maytronics pages list both models for 50-foot floor, wall and waterline coverage, but the CC Pro page names MyDolphin Plus while the DX4 page says Mobile Application: No. The shared digits do not make the machines, packages or feature sets interchangeable. Use the full suffix when checking a seller offer and when requesting support.

The linked manual is not a reliable DX4 operating guide

The exact-number support page is headed Dolphin Proteus DX4 and displays a Proteus DX4 user-manual section. However, the English PDF it links to is a 12-page document whose cover and contents identify “Robotic Pool Cleaner Basic 11 / Classic 11 / Classic 11+,” not Proteus DX4. Its instructions are therefore not assigned to this retail configuration. Do not use that PDF to settle the DX4's electrical setup, minimum water depth, safe placement, chemistry limits, filter care or storage routine. Ask Maytronics for instructions that identify 99996207-LSWF before relying on manual-dependent limits; no sibling manual fills this gap.

Who should keep it on the shortlist?

The DX4 is worth comparing when corded power, waterline coverage, the listed three-surface plan and a 50-foot maximum are priorities, and app control or an included Ultra-Fine kit is not essential. It is not a fully documented choice for a buyer who needs app features, exact step-depth support or a model-matched operating manual in hand. Before ordering, confirm the full model number, included equipment, warranty and return terms with the seller, then compare your pool depth, shape, finish, steps, outlet position and cable route with exact-model guidance. This assessment makes no claim of hands-on use, measured cleaning results, current price or stock, customer experience, or a comprehensive recall clearance.

Primary references: Maytronics’ U.S. Proteus DX4 product page, its exact-number support page and the English PDF linked there, whose cover names Basic 11 / Classic 11 / Classic 11+. The product image linked from the exact product page visibly marks the body Proteus DX4 and shows an attached cable; it does not establish reach, package contents or cleaning performance.