Six models, 30 to 50 ft

Dolphin S-Series Robotic Pool Cleaners

S-Series is one of Dolphin's residential lines, built on the same chassis as the Max-Series™ and ProLine™ models. The S50 is a simple floor cleaner; the S200 through S400 cover 50 ft pools floor to waterline, with app control from the S300. The S2000 cleans steps and sun ledges.

Every S-Series model side by side Free shipping · 30-day in-pool trial · expert help
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Dolphin Sigma robotic pool cleaner waiting beside a backyard pool
Built for the weekly routine
Is this the right line?

Who the Dolphin S-Series Lineup Suits

The S200 is the sweet spot for most 50 ft pools, the S300 adds the app, and the S400 adds Multi-Layer filtration for fine debris. Floor-only pools under 30 ft only need the S50; the S2000 is the step-and-ledge specialist.

The whole S-Series line Every model is below with its price, specs and its own page; the comparison table puts them side by side.

Good fit when

  • Inground pools to 50 ft
  • Owners who want a weekly timer (S100 and up)
  • Pools with fine debris: the S400's Multi-Layer filter

Strengths

  • Clear 30/33/50 ft ladder
  • myDolphin™ Plus app on the S300, S400 and S2000
  • Same platforms as the Dolphin Max-Series™ and ProLine™

Before you buy

  • 2-year warranty across the line
  • No NanoFilter™ option
  • S50 has no timer and cleans floors only

Next step: Compare the S200 and S300 with the Cayman and Quantum.

Every model

The Dolphin S-Series Lineup

Each card opens the model's own page with the full specs, reviews and buying options.

Dolphin S50
Dolphin

Dolphin S50

$719

Best for: In-ground and above-ground pools up to 30 ft, floor only

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Dolphin S100
Dolphin

Dolphin S100

$899

Best for: In-ground and above-ground pools up to 33 ft, floor & walls

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Dolphin S200
Dolphin

Dolphin S200

$999

Best for: Reliable mid-size all-rounder

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Dolphin S300
Dolphin

Dolphin S300

$1499

Best for: In-ground and above-ground pools up to 50 ft, floor, walls & waterline

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Dolphin S400
Dolphin

Dolphin S400

$1799

Best for: In-ground and above-ground pools up to 50 ft, floor, walls & waterline

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Dolphin S2000
Dolphin

Dolphin S2000

$1199

Best for: In-ground and above-ground pools up to 40 ft, floor, walls, waterline, steps & ledges

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Side by side

Compare the Dolphin S-Series Lineup

Every S-Series model on published specs and current price.

Model Dolphin Dolphin S50 Dolphin S50
$719
View details 		Dolphin Dolphin S100 Dolphin S100
$899
View details 		Dolphin Dolphin S200 Dolphin S200
$999
View details 		Dolphin Dolphin S300 Dolphin S300
$1499
View details 		Dolphin Dolphin S400 Dolphin S400
$1799
View details 		Dolphin Dolphin S2000 Dolphin S2000
$1199
View details
Power Corded Corded Corded (low-voltage) Corded Corded Corded
Pool size In-ground and above-ground up to 30 ft In-ground and above-ground up to 33 ft Up to 50 ft In-ground and above-ground up to 50 ft In-ground and above-ground up to 50 ft In-ground and above-ground up to 40 ft
Coverage Floor only Floor & walls Floor, walls & waterline Floor, walls & waterline Floor, walls & waterline Floor, walls, waterline, steps & ledges
Control Power supply button Power supply + weekly timer Weekly timer (power supply) MyDolphin™ Plus app MyDolphin™ Plus app MyDolphin™ Plus app
Filtration Fine Filter Kit Combine Filter Kit + Ultra-Fine Filter Kit Top-load fine cartridge Fine Filter Kit + Ultra-Fine Filter Kit Multi-Layer Combine Filter Kit + Ultra-Fine Filter Kit
Cycle time 1.5 hours (1.5 h) 2 hours 2 hours 2 hours 2 hours (1.5 h, 2 h, 2.5 h) 2.5 hours (2 h, 2.5 h, 3 h)
Warranty 2 years 2 years 2 years 2 years 2 years 2 years
Dolphin S-Series buying guide

What separates the models, and which current Dolphin to price each one against.

S50 to S2000

S50: 30 ft floors, 1.5-hour cycle. S100: floor and walls to 33 ft with a timer. S200: 50 ft, floor to waterline, timer. S300: adds the app. S400: Multi-Layer filtration. S2000: 40 ft with steps and sun ledge coverage and a 2.5-hour cycle.

Where it sits

The S-Series, T-Series, Active and Premium lines are the same ladder under different names. The S200, T35 and Active 20 are one robot in three liveries; price them against the Cayman and Quantum and pick the one at the best price.

In stock at Pool Robots

Frequently Bought Instead

The three robots shoppers of the Dolphin S-Series line most often order from us: comparable coverage, in stock today, free shipping and a 30-day in-pool trial.

Quick answers

Dolphin S-Series Questions

What is the difference between the S200 and S300?

Both cover 50 ft pools floor to waterline with a timer. The S300 adds myDolphin™ Plus app control.

Does the S-Series climb walls?

From the S100 upward, yes. The S50 is a floor-only cleaner for pools to 30 ft.

Which S-Series is the best value?

The S200: full 50 ft coverage with a weekly timer at the middle of the range.

More Dolphin lineups

Browse Every Dolphin Line

Dolphin ProLine™ 3 models · The flagship inground line Dolphin Max-Series™ 3 models · HyperBrush™, MaxBin™, SmartNav 2.0™ Dolphin Nautilus 5 models · Dolphin's best-known value line Dolphin Explorer 8 models · Seven models, 30 to 50 ft Dolphin Liberty 4 models · No cable, no power supply by the pool Dolphin Wave 9 models · Built for hotel, club and competition pools Dolphin EON 4 models · Cordless, app-connected, 50 ft Dolphin Active 9 models · Nine models, 30 to 50 ft Dolphin Premium 7 models · Seven models, Max-Series™ features Dolphin T-Series 8 models · Eight models, 30 to 50 ft Dolphin M-Series 3 models · Three flagships, 3-year warranty Dolphin Proteus 5 models · The DX-Series Dolphin Advantage 3 models · Simple, wall-climbing value Dolphin Classics 6 models · Standalone and legacy models