−13%

Gardena Smart Sileno Sense 400

400 m², Without boundary wire
was CHF911.–
Delivered between Tue, 21.4. and Wed, 29.4.
More than 10 pieces in stock at supplier
free shipping

Product details

The smartSileno sense 400 robot lawnmower from Gardena offers an innovative solution for lawn care in gardens up to 400 m². With its wireless technology, it enables simple installation without a boundary wire, making it particularly easy to use. The integrated SIM card ensures permanent, free mobile connectivity so that the robot lawnmower is always ready for use. Thanks to the advanced trim-to-edge function and camera-supported AI, the robot lawnmower automatically recognises edges and ensures a precise mowing result. Satellite-based navigation enables it to define a virtual boundary, while object recognition ensures that it reliably avoids obstacles. In addition, all camera recordings remain stored on the device, which guarantees data protection. The smartSileno sense 400 is therefore an efficient and safe choice for modern lawn care.

  • Wireless installation without boundary wire
  • Trim-to-edge function for precise mowing along edges
  • Integrated object detection for safe avoidance of obstacles
  • Data remains stored exclusively on the device, no external access.

Key specifications

Max. Slope
25%
Safety
PIN code lockTheft protection
Cutting width
16 cm
Additional properties
App supportTimer

General information

Item number
65477194
Manufacturer
Gardena
Category
Robot lawnmowers
Manufacturer no.
19941-22
Release date
2.12.2025
Sales rank in Category Robot lawnmowers
26 of 200

Robot lawnmower properties

Limitation system
Without boundary wire
Mowing system
Random
Lawn area up to
400 m²
Max. Slope
25%
Safety
PIN code lockTheft protection
Cutting width
16 cm
Number of blades
3x
Additional properties
App supportTimer

Battery / accumulator features

Battery life
0.67 h

Power

Sound power level (LWA)
57 dB

Smart home features

Smart home
Compatible
Transmission type
App

Origin

Country of origin
Czech Republic

Voluntary climate contribution

CO₂ emissions
234.26 kg
Climate contribution
CHF 5.58

Scope of delivery

Scope of delivery
Base station

Product dimensions

Width
40.50 cm
Height
26.20 cm
Length
60.30 cm
Weight
9.50 kg

30-day right of return
24 Months Warranty (Bring-in)
1 additional offer

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Goes with

Reviews & Ratings

Warranty score

How often does a product of this brand in the «Robot lawnmowers» category have a defect within the first 24 months?

Source: Digitec Galaxus
  • 4.Worx
    4.1 %
  • 5.Husqvarna
    4.8 %
  • 6.Gardena
    5.9 %
  • 7.Ecovacs
    6.6 %
  • 8.Dreame
    7 %

Warranty case duration

How many working days on average does it take to process a warranty claim from when it arrives at the service centre until it’s back with the customer?

Source: Digitec Galaxus
  • 4.Worx
    14 days
  • 5.Dreame
    16 days
  • 6.Gardena
    18 days
  • 7.Mova
    21 days
  • 8.Husqvarna
    23 days

Return rate

How often is a product of this brand in the «Robot lawnmowers» category returned?

Source: Digitec Galaxus
  • 3.Mammotion
    2.6 %
  • 4.Mova
    3.2 %
  • 5.Husqvarna
    4.8 %
  • 6.Ecovacs
    6 %
  • 7.Gardena
    12.2 %
Source: Digitec Galaxus