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Steer manually onto wide steps, sun ledges, or missed corners.
Waterline & Wall Scrubbing
Upgrades over the DX3 to scrub along the waterline as well as floors and walls.
Large Top-Load Basket
One-hand top access rinses leaves and fine dirt quickly.
Dual Active Brushes
Scrubs algae and grime off all residential pool finishes.
Nimble 18.5-Lb Chassis
Sized specifically for compact-to-medium inground pools up to 33 ft.
Continuous Corded Suction
Never pauses to recharge mid-week.
Our Take
Who the Dolphin Proteus DX4 Plus Is Really For
Best For
Steps and sun ledges, not just floors and walls
The Bottom Line
Compact 18.5-lb corded Dolphin that adds waterline scrubbing and a handheld remote for pools up to 33 ft—compare with our S200 and Cayman.
The Proteus DX4 Plus is the Dolphin for pools with structure — steps, benches, sun ledges. Those are the areas robots usually skip and owners end up brushing by hand, and this model is explicitly built to cover them.
Steps and sun ledges
A tanning ledge is a shallow horizontal shelf that most robots either can't reach or slide off. The DX4 Plus is specified to scrub steps and ledges as part of its normal cycle, which on a modern pool with a big Baja shelf is the difference between a robot that finishes the job and one that leaves you the worst part of it.
Corded power
Continuous power means suction and brush speed at the end of a cycle match the start. On a pool with a lot of surface area relative to its 33 ft length — which is exactly what a stepped, ledged pool is — that consistency matters.
Cable management
The tangle-resistant cable is a specific design response to the classic corded complaint. It won't eliminate every twist, but it substantially reduces the mid-cycle stall where the robot runs out of usable cable.
Sizing
Rated to 33 ft. That's smaller than most of the Polaris models on this page — check your pool's longest dimension before buying, and step up to a Dolphin Quantum or Premier from our range if you're over it.
Another model worth a look
For pools up to 33–50 ft backed directly by Pool Robots, compare the Dolphin Cayman (Weekly Timer) or Dolphin S200 ($999, 60-ft reach).
Specifications
Dolphin Proteus DX4 Plus Specs
Model Name
Proteus DX4 plus
Material
Plastic
Color
multi-colored
Power Source
Corded Electric
Other Special Features of the Product
Self Propelled,Automatic
Control Method
Remote
Battery Description
Lithium-Ion
Engine Type
Electric Motor
Load Capacity
18.5 pounds
Item Dimensions L x W x H
22.2"L x 17.6"W x 12.8"H
Item Weight
18.5 pounds
Hose Length
40 feet
Installation Type
Plug-and-play
Product Care Instructions
Regularly clean the filter basket, store the device in a dry place when not in use, and refer to the user manual for detailed care instructions.
Number of Items
1
Manufacturer Warranty Description
2-Year
Model Number
99996207-LESW
Manufacturer Part Number
99996207-LESW
GTIN
850015249037
Specifications come from the manufacturer or Amazon listing.
Side-by-side comparison
How the Dolphin Proteus DX4 Plus Stacks Up
This model next to the three ProLine™, Max-Series™ and Clear™ robots closest to its price. Use the dropdowns to put any robot in a column: every Dolphin line, the Clear™ Series, and the other brands we carry.
