Frequently asked questions
We’ve gathered the questions we’re asked most often in one place. If you need more information or don’t see your question here, you can contact us using the button below.
You have more questions?
No. The radar only detects objects that extend at least 30 cm above the water surface.
Yes, provided that part of the swimmer’s body extends at least 30 cm above the water.
Yes, as long as it extends at least 30 cm above the surface.
The selected angle defines the coverage area behind you.
For example, a 15° setting provides coverage of 15° to the left and 15° to the right, for a total of 30°, over a distance of approximately 45 meters.
It corresponds to the estimated time before a potential collision between your vessel and an object (stationary or moving).
The radar activates when the relative closing speed reaches at least 1 km/h.
The radar is designed to track objects moving at very high speeds, well above 100 km/h.
Depending on the version :
1 main radar for long-range detection (~150 m, total angle 8°)
1 secondary radar for wide coverage (~45 m, total angle 90°)
No. The Guardian stores your last settings and automatically applies them at startup.
Yes, it is designed to remain on the water surface.
Typical use : approximately 30 minutes
After heavy use : up to 1 hour
Not optimally. Vegetation tends to poorly reflect radar waves, which can reduce detection performance.
Yes, the device is fully waterproof, including during immersion.
No. The Wi-Fi connection is only used to :
- access settings
- view documentation
- perform updates with support
It does not provide internet access.
After a certain number of alerts, the device adjusts the sound to reduce disturbance to nearby users.
No, this feature is not currently available.
No, this feature is not currently available.
- Turn off the device
- Wait 5 seconds
- Turn it back on
If the issue persists :
- Recharge the device
- Try again
If no beep is emitted, please contact support.
Use a compatible number holder (e.g., Win Tech), preferably in good condition, to ensure :
- device stability
- reliable detection (avoid false alerts)
You can :
- order a replacement kit from the Human And Science website
- or use a compatible pin (same diameter and length)