Gardena Smart Sileno Free 1200m² specifications and in-depth review

Gardena Smart Sileno Free 1200m²

Manufacturer: Gardena

The Gardena Smart Sileno Free 1200m² is a robotic lawn mower designed for medium to large garden areas, offering a range of automated features through its dedicated smartphone app. It connects via Bluetooth and supports remote control from a smartphone, allowing schedules and adjustments without needing to be physically present. The mower handles a recommended area of 1200 m², with a maximum lawn area coverage of 1440 m², and includes sensors for rain, frost, and obstacles to manage operation conditions automatically.

On the performance side, the unit operates with a 22 cm cutting width and offers three cutting height settings ranging from 25 mm to 45 mm, with a working area capacity of 85 m²/h. It handles slopes of up to 30% and includes mulching capability. Weighing 13,820 g and running on an 18.5V system at 43.37W, the mower features a removable battery that charges in approximately 1.67 hours. Audible noise sits at 58 dB in standard operation and drops to 50 dB in eco mode, while auto-docking ensures the unit returns to its base without manual intervention.

Pros
  • Covers a recommended area of 1200 m² with a maximum lawn area capacity of 1440 m², making it suitable for larger gardens
  • Includes rain, frost, and obstacle sensors that allow it to respond automatically to environmental conditions
  • Auto-docking returns the unit to its charging station without any manual intervention
  • The removable battery charges in approximately 1.67 hours, minimizing downtime between mowing sessions
  • Supports mowing scheduling and remote smartphone control via a dedicated Bluetooth app
  • Operates at 50 dB in eco mode, which is relatively unobtrusive during use
Cons
  • No anti-theft features, leaving the unit without protection against unauthorised removal
  • Not compatible with Alexa or Google Assistant, limiting smart home integration options
  • Only three cutting height settings are available, offering limited precision in grass length adjustment
  • Does not support Wi-Fi, restricting connectivity to Bluetooth range only
  • No on-device display, meaning all settings and feedback must be managed through the smartphone app
Who is this for?

This robotic mower is well suited to homeowners with larger garden areas up to 1200 m² who want a largely hands-off mowing routine. Its frost, rain, and obstacle sensors combined with weather adaptation and scheduling support make it a practical fit for users who prefer automated operation with minimal manual oversight. The auto-docking function and remote smartphone control via Bluetooth add further convenience for those who want to manage the mower without being physically present, while the mulching feature appeals to gardeners looking to return nutrients to the lawn without additional effort.

Who is this NOT for?

Users who rely on smart home ecosystems will find this mower limiting, as it lacks compatibility with Alexa and Google Assistant and does not support Wi-Fi, restricting control to Bluetooth range only. Those with particularly uneven terrain or precise lawn care requirements may also find the three cutting height settings insufficient for fine-tuned grass management. Additionally, users concerned about equipment security in open or shared outdoor spaces should note that the mower includes no anti-theft features, which may be a practical concern in certain environments.

General info:

audible noise 58 dB
Has a dedicated smartphone app
supports Wi-Fi
audible noise (eco) 50 dB
Has Bluetooth
cutting width 22 cm
Is electric
height 260 mm
recommended area 1200 m²
supports a remote smartphone
lawn area coverage 1440 m²
thickness 630 mm
volume 70434 cm³
weight 13820 g
width 430 mm

The Gardena Smart Sileno Free 1200m² is an electric robotic lawn mower with a recommended coverage area of 1200 m² and a maximum lawn area capacity of 1440 m². It features built-in Bluetooth and a dedicated smartphone app that allows remote control directly from a mobile device, though it does not support Wi-Fi. The cutting width measures 22 cm, and the unit operates at an audible noise level of 58 dB, dropping to 50 dB in eco mode. Physically, it measures 430 mm in width, 630 mm in thickness, and 260 mm in height, with a total weight of 13,820 g and a volume of 70,434 cm³.

Features:

has an obstacle sensor
Has a rain sensor
can be scheduled
has anti-theft features
auto docking
works with Alexa
compatible with Google Assistant
Has a display
has a frost sensor
Has mulching feature
adapts to weather conditions
works in rain

The mower includes a range of sensors to manage operation automatically, with rain, frost, and obstacle sensors enabling it to respond to changing conditions and navigate the lawn safely. It adapts to weather conditions and is capable of working in rain, while the auto-docking function ensures it returns to its charging station without manual input. Scheduling is supported, allowing mowing sessions to be planned in advance. The unit also features a mulching capability for returning cut grass to the lawn. It does not include anti-theft features or a display, and it is not compatible with Alexa or Google Assistant.

Performance:

slope performance 30%
mowing time 140 m
number of cutting height settings 3
maximum cutting height 45 mm
minimum cutting height 25 mm
working area capacity 85 m²/h

The mower delivers a working area capacity of 85 m²/h and handles slopes of up to 30%, making it suitable for gardens with moderate inclines. Cutting height is adjustable across three settings, ranging from a minimum of 25 mm to a maximum of 45 mm, allowing for some flexibility in grass length preference. The mowing time is listed at 140 m, and the unit maintains a steady and methodical approach to covering the lawn area within these operational parameters.

Power:

charge time 1.67 hours
has a removable battery
voltage 18.5V
wattage 43.37W

The mower runs on an 18.5V system with a power consumption of 43.37W and features a removable battery, which can be taken out for separate charging or replacement. A full charge is reached in approximately 1.67 hours, keeping downtime between mowing sessions relatively brief.

Final Verdict

The Gardena Smart Sileno Free 1200m² positions itself as a capable and largely self-sufficient robotic lawn mower for larger residential gardens, with its automated sensor suite and scheduling functionality standing out as its most practical strengths. The combination of rain, frost, and obstacle detection alongside auto-docking and remote smartphone control via Bluetooth makes it a well-rounded option for users seeking minimal day-to-day involvement in lawn maintenance. Its connectivity is limited to Bluetooth without Wi-Fi or voice assistant support, and the absence of anti-theft features may give some users pause, but for those whose primary need is reliable, automated coverage of a large lawn area with straightforward control, the Sileno Free 1200m² delivers a coherent and functional feature set.

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