Robotic pool cleaner comparison

Dolphin Proteus DX4 vs Dolphin Triton PS

A side-by-side comparison of pool fit, cleaning coverage, filtration, controls and the better Pool Express option.

By Brian Williamson, Pool Express product specialist
Updated November 9, 2026

Better alternative

A stronger Pool Express option

Dolphin Proteus DX4 and Dolphin Triton PS are compared feature by feature below. For a stronger Pool Express option, consider Dolphin Quantum. Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris.

Buy Dolphin Quantum Compare every robot

Proteus

Dolphin Proteus DX4

Inground pools that need floor, wall and waterline cleaning.

Listed price $1,199

View better alternatives

Triton

Dolphin Triton PS

Inground pools up to 50 ft that need floor, wall and waterline cleaning.

Listed price $1,099

View better alternatives

A better alternative

What we recommend instead

Pool Express pick

Dolphin Quantum

Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris.

$1,649

Buy Dolphin Quantum

Buying guidance

Dolphin Proteus DX4 or Dolphin Triton PS: our take

Dolphin Proteus DX4 and Dolphin Triton PS are compared on pool fit, cleaning reach, debris handling, controls and ownership details. The recommendation is based on the job the robot must do—not a simple feature count.

Pool fit and cleaning reach

Both robots are intended for inground pools. Dolphin Triton PS has a published maximum pool length of 50 ft; the other model does not have a verified length in our source material. Each cleans floor, walls, and waterline, so coverage alone does not separate them. Dolphin Proteus DX4's documented cleaning system includes 1 active brush.

Filtration and debris

Both models include Basket.

Controls and day-to-day ownership

Both models provide a weekly timer and power-supply controls. Both use a 60 ft corded cable with an anti-tangle swivel.

Price, warranty and the decision

Dolphin Proteus DX4 is listed at $1,199 and Dolphin Triton PS at $1,099; Dolphin Triton PS is $100 less. Each lists a 2-year manufacturer warranty. Dolphin Proteus DX4 and Dolphin Triton PS each have a specific fit, but neither is the Pool Express pick for this job. Our better alternative is Dolphin Quantum. Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris.

Feature check: what each robot actually has

A green check means the feature is documented as included. A red X means it is documented as absent. A dash means the source does not make the feature clear.

Feature	Dolphin Proteus DX4	Dolphin Triton PS
Cleans the pool floor	Yes	Yes
Climbs and cleans walls	Yes	Yes
Scrubs the waterline	Yes	Yes
Fine-debris filter included	No	No
Large-debris filter	Yes	Yes
Automatic scheduling	Yes	Yes
Smartphone app	No	No
Anti-tangle swivel	Yes	Yes
3-year warranty	No	No
No recharging between cycles	Yes	Yes
Built-in UV-C water treatment	No	No

Unknown is not treated as “no.” Specifications come from the product pages, current catalog records and manufacturer material collected for this site.

Where Dolphin Proteus DX4 stands out

Dolphin Proteus DX4 is the better fit for inground pools that need floor, wall and waterline cleaning.

Where Dolphin Triton PS stands out

Dolphin Triton PS is the better fit for shoppers prioritizing the lower $1,099 starting price.

Is listed $100 lower

Dolphin Proteus DX4 vs Dolphin Triton PS specifications

Use pool fit first. Price and app control do not make up for a robot that cannot cover the length or surfaces you need cleaned.

Specification	Dolphin Proteus DX4	Dolphin Triton PS
Best fit	Inground pools that need floor, wall and waterline cleaning.	Inground pools up to 50 ft that need floor, wall and waterline cleaning.
Starting price	$1,199	$1,099
Pool type	Inground	Inground
Maximum pool length	Not listed	Up to 50 ft
Cleaning coverage	Floor, Walls, Waterline	Floor, Walls, Waterline
Power	Corded	Corded
Filtration	Basket	Basket
Scheduling	Weekly schedule	Weekly schedule
App and remote	Power-supply controls	Power-supply controls
Cable	60 ft with anti-tangle swivel	60 ft with anti-tangle swivel
Robot weight	Not listed	Not listed
Warranty	2 years	2 years

Final call

Consider the stronger Pool Express option