GARDENA smart SILENO sense 400

Name: GARDENA smart SILENO sense 400
Brand: Gardena
SKU: 974391
Price: 917 EUR
Availability: InStock
Rating: 10 (1 reviews)

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400 m2

Lawn surface

400 m2

600 m2

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Input
- Via WiFi and app
- Via WiFi and app
- Via WiFi and app
- Via WiFi and app
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Product information

Key specs

	Lawn surface	400 m2
	Maximum noise level	57 dB
	Controls via app

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Pros and cons

According to our robot lawn mower expert

The robot lawn mower uses AI to get to know your lawn and growth patterns and adjusts the mowing schedule accordingly.
With the GARDENA smart system app, you can control the robot lawn mower from anywhere and easily check the mowing route even when you're not home.
Thanks to the maximum incline of 30%, you can also mow hilly fields and ditch edges.
Due to the small cutting swath and shorter battery life, the robot lawn mower can only mow lawns up to 400m2.

Description

With the GARDENA smart SILENO sense 400, the robot lawn mower adjusts its mowing schedule to your lawn. Thanks to AI, it learns about the growth of the grass and takes the weather into account. That way, it only mows when necessary. With RTK GPS, it accurately navigates the lawn and drives around in straight and overlapping lanes. The built-in object recognition can see stones, toys, and other obstacles on the grass and automatically dodges them. Via the app, you can control the mower remotely and easily adjust the settings. The battery is suitable for lawns of up to 400m2. Thanks to the camera, it also mows accurately along the edges. With a 30% maximum incline, it's also suitable for light to medium hilly lawns.

Tips for using this product

Included by default

Manual
Charging dock

Reviews

Rating

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Most helpful reviews

Review is 10 out of 10.

Quiet and smart robotic mower for a neat lawn.

Convenient base station
Smart features
Not loud
Installation a bit complicated

The Gardena Smart Sileno Sense 600 mows my lawn perfectly while I go grocery shopping.

Installation and app

After taking the robotic mower out of the box, I read the installation manual. Because this is my first robotic mower, I didn't immediately know how to install the robot. But after watching a video from Gardena, I figured it out. Once up and running, the robot explored my lawn. That is how it learned its mowing route. In the app, I specified the mowing length and the areas where the robot should drive slowly.

Precisely mowed The lawn slopes slightly at my driveway. Even there, it drives smoothly over the grass without the wheels slipping. When the robot turns, it does so gently, and I never see gaps in my lawn. Even where I have a bit more moss in the grass, it mows without any problems. Because the robot has a low noise level, the mower hardly disturbs me when I am sitting in the garden. This allows me to do my sudoku in peace while the robot mows. Base Station

When the robot has finished mowing, it returns to its base station on its own. There, it recharges for the next mowing session. I built a shelter for the robot next to my shed, but I can also buy a separate garage to place on top of the base station. This protects the robot from rain, wind, and leaves. Without a garage, the robot breaks down faster.

Review by:
Djoeke. Robotmaaier specialist.
Date:
9 June 2026
Translation:
Automatically translated from Dutch

Insure your robot lawn mower

Coolblue takes care of everything, from taking out an insurance to repairs
For almost all accidents
More coverage in case of damage than your standard warranty
No deductible

How do I insure my robot lawn mower?

First, add your robot lawn mower to your shopping cart. On the next page, choose the Protection Plan below. You always have a 30-day return window and pay no deductible in case of damage.

2-year Protection Plan
25,99
one-time
3-year Protection Plan
76,-
one-time

Free garage GARDENA robot lawn mower

If you purchase the robot lawn mower between 1 March 2026 and 31 July 2026, you can request a free station from GARDENA. You can register your promotional product for the GARDENA promotion until 15 August 2026. Go to the promotional Terms and Conditions (PDF) for more information.

Specifications

Product

Product
	Product number	974391
	Manufacturer code	19941-26.000.00
	Brand	Gardena
	Processing of your defect	Via Coolblue
	Old product returned for free

Physical properties

Physical properties
	Weight	9,5 kg
	Depth	60,3 cm
	Height	26,2 cm
	Width	40,5 cm
	Cutting deck material	Plastic

Mowing properties

Mowing properties
	Lawn surface	400 m2
	Cutting width	16 cm
	Maximum noise level	57 dB
	Maximum incline	30 %

Functionalities

Functionalities
	Cliff sensors
	Input	Via WiFi and app

Power supply

Power supply
	Power source	Battery
	Battery technology	Lithium-ion
	Replaceable battery
	Battery/battery capacity	2 Ah
	Battery / battery voltage	18 V
	Maximum battery life	50 hours

This is the one

GARDENA smart SILENO sense 400

Review is 10 out of 10, based on 1 review.

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GARDENA smart SILENO sense 400

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GARDENA smart SILENO sense 400