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From our technical experts

Dolphin Supreme M400 Pool Cleaner


  • Recommended for pools up to 15m in length
  • Entire pool cleaning
  • Total cleaning efficiency
  • Caddy included


Dolphin Supreme M400 Pool Cleaner

The Dolphin Supreme family of robotic pool cleaners delivers top-of-the-line performance with the absolute minimum in effort and hassle. With a Dolphin Supreme working for you, you can relax and enjoy your pool with full confidence that the water is clean for you and your family. The Supreme models have a unique triple-active brushing system which eliminates algae and bacteria, reducing the need for chemicals. They provide reliable filtration in all pool conditions and have an exclusive, dual-level filtration system which ensures a dust and debris free pool.

Advanced technologies deliver precise scanning and total cleaning efficiency all the way to the water line, in minimal time and without manual intervention. They allow for convenient maintenance with patented top-opening filtration compartments for easy emptying and cleaning. Gyroscopic navigation system inside maintains stable navigation and ensures maximum cleaning efficiency.

Step up to a new experience with the Dolphin M400 wall-climbing robotic pool cleaner. Recommended for pools up to 15m in length, the M400 is the cost-effective way to ensure entire pool cleaning, including the floor, walls, and waterline.

Features and benefits:
• Brushes, scrubs, vacuums, and filters the entire pool including the floor, walls and waterline
• The new, advanced technology enables optimal scanning and pool coverage in a shorter cycle time
• Add-on extra brushing system is twice as efficient. The rigorous brushing and scrubbing action reinforces the elimination of algae and bacteria
• Top opening filtration compartments for easy and convenient maintenance
• Dual-level filtration system, Ultra-fine and Spring net for all type of dirt and debris, even small particles
• Swivel on cable prevents cable tangling
• One-way water valves prevent the escape of debris and ensure rapid water drainage
• Adjustable floats allow efficient scanning in different pool shapes
• Automatic motor protection mechanism
• Low voltage low energy consumption
• Automatic shut off at end of each cycle
• DIY – easy maintenance at user and local dealer level
• Suitable for beach entry pools

  • Cycle time: 2.5 hours
  • Pool length: up to 15 metres
  • Cable length: 18 metres
  • Filtration –  Dual level filtration for fine and rough dirt
  • Brushes – Dual / Combined brushes supplied are suitable for liner, tile and concrete pools. For a deeper clean on fully tiled pools please select the “Wonderbrush Set” (see separate listing)
  • Weight: 10.5kg
  • Suction rate: 17m³ per hour
  • Motor unit voltage: 24 VDC
  • Power supply: Output <30 VDC; IP54
  • Caddy Included
  • My Dolphin App – requires WiFi at poolside
  • Warranty: 4 years

Prior to June 2017, the Dolphin M400 was known as the Dolphin Supreme M4.

Free delivery to UK Mainland. For delivery cost to all other areas please call or email giving your postcode.

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Returns Policy

Your rights to return goods are protected under the EU Distance Selling Directive.

You are entitled to cancel your order and return the goods within 7 working days for a full refund not including the cost of delivery. Do this by contacting us by email or telephone and quoting the order number supplied to you. Your refund will be paid within 30 days. You are responsible for the cost and risk of loss or damage when returning the goods, so you should take out enough postal insurance to cover their value. This cancellation policy does not affect your rights when we are at fault - for example, if goods are faulty or incorrectly-described.

Exclusions: Bespoke items (made to measure items) are not included and cannot be returned. If a bespoke item is faulty then the product warranty /guarantee will take effect.

Any goods returned should be in saleable condition.

These terms apply to your order. We may change our terms and conditions at any time, so please do not assume that the same terms will apply in the future.

None of these terms affect your legal rights and these are not diminished in any way. If any term is held to be invalid under any applicable statute or rule of law, that term is automatically omitted from the terms to minimum extent necessary to comply with the law and without affecting the validity or enforceability of the remainder.