Dolphin S300i: the S300 with a smartphone
The Dolphin S300i is the connected version of the popular Dolphin S300. The cleaning hardware is the same proven S-Series platform — PowerStream mobility for constant grip on floor, walls and waterline, multi-layer snap-apart filtration and an active scrubbing brush — with one addition that changes how you use it: MyDolphin™ Plus app connectivity.
What the "i" adds
- Weekly scheduling from your phone — set it Sunday, swim all week.
- Cycle selection and delayed start without walking to the power supply.
- Manual spot-clean mode — drive the robot to a problem area from the app.
S300 or S300i?
If you run the robot on a fixed routine and don't care for apps, the standard S300 cleans identically for less money. If you like scheduling, remote starts and steering — or the pool is at a holiday home you manage remotely — the S300i earns its premium. Buyers comparing further up the range should also look at the M500 and M700, which add larger filtration and longer warranties.
Who it suits
Residential in-ground pools up to around 12 m, any common surface — tiled, fibreglass, concrete or liner. Like the S300, it's a floor-walls-waterline cleaner, so the visible scum line gets scrubbed too.
Frequently asked questions
What is the Dolphin S300i?
The Dolphin S300i is a residential robotic pool cleaner from the Maytronics Dolphin S Series range. Like all Dolphin robotic pool vacuums it plugs into a low-voltage power supply, drives itself around the pool and collects debris in its own onboard filter, independent of your pool pump.
Does the Dolphin S300i come with a warranty?
Yes — all Dolphin robotic pool cleaners carry a Maytronics manufacturer warranty. The exact length for the Dolphin S300i varies by region and retailer, so check the listing or your local dealer before buying.
Where is the best place to buy the Dolphin S300i?
For most buyers, Amazon offers the best combination of price, delivery and returns for the Dolphin S300i. In the Middle East, Dolphin cleaners are also sold through local Maytronics dealers — see our worldwide availability guide.
How do I maintain the Dolphin S300i?
Rinse the filter after every cycle, check the brushes and tracks for wear each month, keep the power supply shaded and dry, and store the robot out of direct sun. Our Dolphin maintenance guide covers the full routine step by step.
Related models & comparisons
More S Series models
Compare before you buy
Keep exploring
Check today's price for the Dolphin S300i
See current pricing, bundles and customer reviews on Amazon.
As an Amazon Associate, this site earns from qualifying purchases made through links on this page. Prices and availability are those shown on Amazon at the time of purchase.