GARDENA smart SILENO city 400

Name: GARDENA smart SILENO city 400
Brand: Gardena
SKU: 944117
Price: 691 EUR
Availability: SoldOut
Rating: 8 (8 reviews)

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Product information
Accessories
Reviews
Insurance
Specifications

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

With the GARDENA smart system, you can control the robot lawn mower from anywhere and easily check the mowing route, even when you're not at home.
Thanks to the maximum incline of 35%, you can also mow hilly fields and pond edges.
With the LONA technology, you can easily determine the mowing zones and skip areas you don't want to mow.
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 city 400 robot lawn mower, you can keep lawns of up to 400m2 neat. You can easily control it with the GARDENA smart system app on your smartphone or tablet (iOS and Android) via WiFi. Even when you're not home, you can set the lawn size, the number of mowing days, and the start time. That way, the robot lawn mower gets to work at the time you choose. The motor has a 57dB maximum noise level, so it's very silent. That way, you and your neighbors barely notice it when it's mowing the grass. Thanks to the included perimeter wire, the robot lawn mower automatically goes to all mowing areas. While the Smart SILENO city 400 is mowing your grass, you have time for other things.

Tips for using this product

Included by default

Manual(6.36 MB)
Gateway

Reviews

Rating

5 stars

4 stars

3 stars

2 stars

1 star

Most helpful reviews

Review is 7,6 out of 10.

Great mower, but very limited battery.

You save time
Less garden waste
Battery life is sad

Once set up, the robot works autonomously. And it saves us at least 1½ hours per week. Exactly what we bought these for. We have approx. 200M² of grass and have therefore bought this version of 600M² so that we are sure that the robot can handle this. Well, not so. We have set the robot to mow for 6 hours every day. Unfortunately, the battery is empty after 1½ hours of mowing and then it takes over an hour to charge and then it can be used again for 1½ hours. Very bad!

Review by:
Ferry
Date:
15 April 2023
Translation:
Automatically translated from Dutch

Review is 9,6 out of 10.

Super fun and handy robot lawn mower

Nice mower
Solid product
Easy operation on the mower
Labor-intensive installation of the wires in your garden

I chose this smart variant because of the combination with a gateway, which means that communication with the robotic lawnmower does not necessarily have to be within 10 meters. Installation was fairly labor-intensive (I have a main area and a secondary area); I chose to work the wiring 10 cm into the ground to be able to continue scarifying the grass (140 meters of wire in 2.5-3 hours). When the robotic lawnmower initially started, a message came up about a damaged boundary wire. At first it was a bit of a shock, but it soon turned out that the connector containing the boundary wire and the control wire had not been properly tightened. Installing the mowing schedule via the app is super convenient, as is setting the extra options, including a connection with the Google Home voice assistant. From now on a pleasure to watch .. 'Hey Google, dock my mower'!

Review by:
Pieter O
Date:
24 September 2024
Translation:
Automatically translated from Dutch

Review is 8,0 out of 10.

Silent worker

Quiet
Reception of Smart base station is very good
Unofficial integration for Home Assistant exists
It is best to have a manual with it

It's a great robot that does its job well. It's quiet and practically never gets in the way. Setting up the wires does require some explanation, as there are a few rules to consider. However, for a simple, rectangular setup, it's not too bad. Once the wires are laid, they do get overgrown quite quickly. Laying the wires is a bit of work, but it doesn't take hours. Just make sure you bury them in the ground if you still want to use the scarifier.

I wanted one with a wire because it could easily drive into a chasm. If a GPS model has a 10-meter error, it could just shut down. This model also stops completely if the wire signal is lost. Ideal for my situation.

It's a bit of a shame that the robot can no longer be started from the onboard display when it's connected to the smart gateway. That has to be done via the app.

Review by:
Maarten
Date:
20 August 2025
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
19,99
one-time
3-year Protection Plan
57,-
one-time

Specifications

Product

Product
	Product number	944117
	Manufacturer code	19605-66.000.00
	Brand	Gardena
	Processing of your defect	Via Coolblue
	Old product returned for free

Physical properties

Physical properties
	Weight	11,9 kg
	Depth	55 cm
	Height	23 cm
	Width	38 cm
	Cutting deck material	Plastic

Mowing properties

Mowing properties
	Lawn surface	400 m2
	Cutting width	16 cm
	Mulching function
	Maximum noise level	57 dB
	Maximum incline	35 %

Functionalities

Functionalities
	Area demarcation
	Length of included perimeter wire	150 m
	Area delimitation type	Perimeter wire
	Input	Via WiFi and app

Power supply

Power supply
	Power source	Battery
	Battery technology	Lithium-ion
	Battery/battery capacity	2 Ah
	Battery / battery voltage	18 V

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GARDENA smart SILENO city 400

Never available again

Product information

Key specs

Pros and cons

Description

Tips for using this product

Included by default

Reviews

Rating

Most helpful reviews

Great mower, but very limited battery.

Super fun and handy robot lawn mower

Silent worker

Insure your robot lawn mower

How do I insure my robot lawn mower?

Specifications

Product

Physical properties

Mowing properties

Functionalities

Power supply

Related products

Product information

Key specs

Pros and cons

Description

Tips for using this product

Included by default

Reviews

Rating

Most helpful reviews

Great mower, but very limited battery.

Super fun and handy robot lawn mower

Silent worker