Part of the Dolphin ProLine™ lineup · compare all 3 models
Dolphin Sigma Robotic Pool Cleaner
- Triple 24V commercial-grade brushless DC motors with 4,500 GPH suction
- Onboard Gyroscope + SmartNav 3.0™ conquers complex freeform pools
- Split quad scrubbing brushes + dual top-load SnapLoc™ NanoFilter™ baskets
- myDolphin™ Plus Wi-Fi smartphone app + programmable Weekly Smart Timer
- 60-ft 360° anti-tangle swivel cord & flagship 3-year Maytronics warranty
or as low as $199.92/mo with
Make storage easier:
Dolphin Universal Caddy
$145
Why pool owners add the Universal Caddy
- Effortless Roll-to-Pool Transport – Wheel your Dolphin smoothly from patio or garage to poolside without heavy lifting
- Protects Scrubbing Brushes – Cradles the cleaner off the ground so active brushes never develop flat spots in storage
- Integrated Power Supply Mount – Locks your power supply upright off wet decks and neatly coils up to 60 ft of swivel cable
- Genuine Maytronics Fit – Engineered specifically by Maytronics to cradle residential Dolphin robotic pool cleaners
Dolphin Premium Caddy Cover
$99
Why add the Premium Caddy Cover
- All-Season UV & Rain Shield – Heavy-duty woven polyester protects plastics, tracks, and cables from harsh sun and storms
- Shields Power Supply Electronics – Keeps your caddy-mounted power supply dry, shaded, and free of dust and pollen
- Ventilated, Wind-Secure Fit – Built-in side vents prevent trapped humidity while bottom velcro straps hold firm in high winds
- Roll Without Removing – Integrated top handle slot lets you wheel your covered caddy straight into storage
*Rates from 0% APR. Subject to eligibility check. See payment terms.
Commercial Triple-Motor Precision with Full Wi-Fi Control
Triple Commercial DC Motors
Three high-RPM brushless 24V motors deliver relentless 4,500 GPH suction and zero-radius turning torque while using nearly 90% less energy.
Onboard Gyroscope + SmartNav 3.0™
Real-time gyroscopic stabilization corrects drift on steep hoppers, curves, and steps so no section of a 50-ft pool gets skipped.
Split Quad Scrubbing Brushes
Four independent brush rollers counter-rotate to pivot cleanly out of corners while scrubbing stubborn biofilm and waterline scum.
Dual Top-Load SnapLoc™ NanoFilters™
Lift out twin top-access cartridges, unsnap the sides, and rinse 2-micron silt, pollen, and leaves clean in seconds.
myDolphin™ Plus Wi-Fi App
Start cycles remotely, build custom weekly schedules, spot-clean trouble zones, and check status from your phone.
3-Year ProLine™ Warranty
Backed by Maytronics' longest 3-year residential warranty plus a patented 60-ft 360° anti-tangle swivel cable.
The Tech Flagship of the Dolphin Lineup
Engineered for pool owners who want commercial-grade hardware with smartphone convenience, the Dolphin Sigma combines three brushless DC motors, an onboard gyroscope, Dual-Quad split scrubbing brushes, and myDolphin™ Plus Wi-Fi control in one flagship machine.
High-Capacity SnapLoc™ NanoFilter™ Cartridges
Forget messy filter bags or cramped single trays. The Sigma uses oversized top-access SnapLoc™ filter panels that unclip individually so trapped leaves, sand, pollen, and fine silt rinse clean with a garden hose in seconds. Both ultra-fine NanoFilter™ pleated panels and standard mesh panels come in the box.
PowerClean™ Split Quad Scrubbing Brushes
Four independent brush segments counter-rotate across the front and rear of the chassis, giving the Sigma tank-like pivot precision in tight corners, curves, and steps while aggressively scrubbing away stubborn algae and surface biofilm.
Precision Wall & Waterline Grip
Guided by its onboard gyroscope and high-torque HyperGrip™ tracks, the Sigma climbs vertical walls and scrubs laterally along your tile line—removing sunscreen rings and waterline buildup before they stain.
Triple Commercial-Grade 24V DC Motors
Most residential robots share one drive motor and one pump motor. The Sigma steps up to three dedicated 24-volt DC motors—delivering 4,500 GPH suction and zero-radius turning while using nearly 90% less electricity than legacy pressure-side cleaners.
Gyroscope + SmartNav 3.0™ Navigation
Complex freeform pools, deep hoppers, and island steps confuse basic timers. Sigma's internal gyroscope continuously corrects heading drift while SmartNav 3.0™ maps your floor and walls for systematic 2.5-hour full-pool coverage.
myDolphin™ Plus Wi-Fi App & Weekly Timer
Start a cycle from work, program recurring weekly cleanings, switch cleaning modes, or check cycle progress right from your iPhone or Android device—all backed by a 60-foot anti-tangle swivel cable and Maytronics' 3-year ProLine™ warranty.
Independent Hands-On Reviews
Built for Complex Pools That Stump Ordinary Cleaners
Lagoon curves, deep diving wells, raised spas, and wide tanning ledges routinely throw single-drive cleaners off course. The Dolphin Sigma borrows directly from Maytronics' commercial Wave engineering—pairing an onboard gyroscope and SmartNav 3.0™ with three brushless 24V DC motors and four independently spinning split brushes so it pivots on a dime and holds vertical walls all the way to the tile line.
SnapLoc™ Dual Top-Load Filtration
Instead of bottom-mounted bags, the Sigma houses twin high-capacity top-loading SnapLoc™ filter cartridges. Both ultra-fine pleated NanoFilter™ panels (capturing cloudy dust and algae down to 2 microns) and standard mesh screens ship in the box, snapping apart in seconds for effortless garden-hose rinsing.
Connected Control + Patented Swivel Reliability
Use the myDolphin™ Plus Wi-Fi app from anywhere—or the built-in Weekly Timer on the power supply—to run crisp 2.5-hour cleaning cycles while the 60-ft 360° anti-tangle swivel keeps the cord completely knot-free.
What's Included in the Box
- Dolphin Sigma ProLine™ Cleaner with Triple Commercial DC Motors & 60-ft 360° Swivel Cable
- Wi-Fi Smart Power Supply with Programmable Weekly Timer (myDolphin™ Plus App Compatible)
- Dual Top-Load SnapLoc™ Cartridges with NanoFilter™ Ultra-Fine Set (4 panels) & Standard Mesh Set (4 panels)
- 3-Year Maytronics ProLine™ Manufacturer Warranty
Dolphin Sigma Specs
Dolphin Sigma FAQ
Dolphin Sigma vs. Dolphin Premier—which ProLine flagship is better?
Choose the Dolphin Sigma if you want Wi-Fi smartphone control, an onboard gyroscope, triple motors, and easy top-load SnapLoc™ cartridge access. Choose the Dolphin Premier if your yard drops heavy leaves and acorns (where the Premier's Oversized Leaf Bag shines) and you prefer simple button controls for $400 less.
Does the Dolphin Sigma include both NanoFilters and standard mesh filters?
Yes—4 ultra-fine pleated NanoFilter™ panels and 4 standard micro-mesh panels come in the box.
Does the Sigma come with a caddy?
A caddy is sold separately so you only buy what you need—check the Universal Caddy box above or see our Dolphin Sigma + Universal Caddy Bundle.
Will the Sigma work if Wi-Fi doesn't reach my pool equipment pad?
Yes. You can operate it via Bluetooth poolside or use the physical Start and Weekly Timer controls directly on the power supply.
We’re Here Long After Delivery Day
3-Year Maytronics ProLine™ Warranty
Protected by Maytronics' top-tier 3-year ProLine™ manufacturer warranty and nationwide service network. See warranty details.
30-Day Returns
If it isn’t right for your pool, start a return within 30 days.
Fast, Free Shipping
Your cleaner ships fast and free on qualifying orders, ready for its first run.
Let the robot clean the pool. Let ICO watch the water.
ICO tests your water every hour and tells you exactly what to add—before cloudy water or algae ruins the weekend.
- Measures pH, ORP, and water temperature every hour
- Exact chemical amounts in the free iOS & Android app
- Warns you before heat or rain knocks the water out of balance
- Versions for chlorine/bromine and salt water pools (salt also tracks TDS)
ICO - The Smart Pool Water Monitor
Hourly water readings and exact dosing help—without another subscription.
Which type of pool do you have?
Complete Your Setup
Make poolside transport effortless and shield your cleaner and power supply between cycles.
How the Dolphin Sigma Stacks Up
See what spending more—or less—changes in pool size, filtration, warranty, and everyday convenience.
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Current model
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|---|---|---|---|---|---|
| Best for | Tech-lovers who want it all | Best all-around inground pick | Premium clean without the UV price | Cleaner, sanitised water | Heavy leaves & debris |
| Cleaning coverage | Floor, walls & waterline | Floor, walls & waterline | Floor, walls & waterline | Floor, walls & waterline | Floor, walls & waterline |
| Filtration | Dual top-load cartridges + NanoFilters™ | XXL MaxBin™ top-load + NanoFilters™ | UltraFilter™ (1μm / 180μm) | UltraFilter™ (1μm / 180μm) | Multi-Media™ (4 media + leaf bag) + NanoFilters™ |
| Warranty | 3 years | 2 years | 3 years | 3 years | 3 years |
| Climbs walls | |||||
| Scrubs waterline | |||||
| Ultra-fine filtration | |||||
| Wi-Fi + app control | — | ||||
| UV water clarifier | — | — | — | — |
Specs are based on manufacturer data; prices can change. Build your own comparison →
*Rates from 0% APR or 10–36% APR. Payment options through Shop Pay Installments are subject to an eligibility check and are provided by these lending partners: affirm.com/lenders. Options depend on your purchase amount, and a down payment may be required. State notices to consumers: affirm.com/licenses.