Maytronics Dolphin M400 Robotic Pool Cleaner

Maytronics  |  SKU: 99991053-USI

$1,64900/ea
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Robotic Pool Cleaner with Wi-Fi for Pools up to 50ft

The Dolphin M400 delivers comprehensive cleaning for residential in-ground pools up to 50 feet with advanced dual-filter technology and smart app control. This premium robotic cleaner tackles everything from fine debris to larger particles while you relax.

Key Features

  • Cleans floor, walls, and waterline — complete pool coverage in one 2.5-hour cycle
  • Dual filtration system — includes both fine and ultra-fine filter cartridges for maximum debris capture
  • MyDolphin Plus app compatibility — schedule cleanings and control your robot remotely
  • Weekly timer function — set it and forget it for automatic maintenance
  • Anti-tangling swivel — prevents cord twisting during operation

The ultra-fine filter cartridge excels at capturing algae and microscopic particles that standard filters miss, making it ideal for pools recovering from algae blooms.

Maximum Pool Length
50 ft (15 m)
Cleaning Coverage
Floor, Walls and Waterline
Default Cycle Time
2.5 Hours
Weekly Timer
Yes
Mobile Application Compatibility
MyDolphin Plus app
Anti Tangling Swivel
Yes
Filter Type
Fine Filter & Ultra‑Fine Filter Kit
Robot Weight
27 lbs (12.23 kg)
Filter Access
Top Access
Number Of Brushes
3
Brush Type
Standard & Combine Brush
Suction Rate
17 m/h

This product ships free via FedEx Home Delivery.

As an authorized Maytronics retailer, EZ Pools carries only genuine Dolphin robotic pool cleaners — meaning every product you purchase is fully eligible for Maytronics' manufacturer warranty coverage. Maytronics backs their Dolphin lineup with industry-leading protection, so you can buy with confidence knowing your investment is covered. Be sure to register your product after purchase, and visit the Maytronics support page for FAQs, manuals, and additional assistance.

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