Frequently asked questions
- Is the fog dangerous for health?
Made from food-grade glycol (sucrose, kaolin, magnesium oxide), certified non-toxic by the University of Crete and CE compliant. Direct and prolonged exposure may nonetheless cause temporary irritation of the eyes and throat — the device must never be triggered while people are inside a closed room.
- Is it dangerous for my pets?
No. The fog is non-toxic. The smoke smell naturally causes animals to retreat to another room. Always provide an escape route (door left ajar).
- Does the fog leave marks on furniture?
Thanks to the built-in filter, Smoke-Defender drastically reduces residues compared to standard fog generators (which leave visible marks on surfaces). A few micro-droplets may be observed under the device after activation — easily cleaned with warm water.
- What does the smell like after activation?
The smoke smell is intentionally strong (close to burnt wood) — it's a key part of the dissuasive effect, creating a sense of urgency for the intruder. The smell persists 2 to 6 hours on fabrics and dissipates with extended ventilation (open windows 30-60 minutes).
- What should I do if it accidentally activates while I'm home?
Wait for the ejection to finish (a few seconds), then open the windows wide to ventilate — this speeds up dissipation of the fog and its smell. The fog is certified non-toxic (food-grade glycol, tested by the University of Crete). For comfort, we simply recommend not deliberately triggering the device in an occupied, closed room.
- Does the fog trigger smoke detectors?
No. It's not smoke — it's a glycol-based fog that doesn't trigger standard smoke detectors.
- Is it legal?
Yes, fully legal for residential and commercial use. CE certified (RED directive 2014/53/EU).
- Does it work without an alarm system?
Yes. Smoke-Defender is fully autonomous. A simple power outlet is enough. Triggered by remote control or SmartLife app.
- How long to fill a room?
About 8 seconds for ~100 m³. Visibility drops to nearly zero.
- How long does the fog last?
30 to 45 minutes. Open windows to speed up dissipation.
- What area does the fog cover?
About 100 m³, roughly 45 m² with a standard 2.5m ceiling.
- Can I trigger it from a smartphone?
Yes. The SmartLife app lets you instantly trigger the generator from your phone.
- Can it be triggered during an assault?
Yes. Instant trigger via remote or panic button, widely used in shops.
- Does it work without WiFi?
Yes. The No-WiFi Pack (€324.90) uses a wired 12V detector and 433 MHz RF plug. Ideal for garages, barns, holiday homes.
- What is the SmartLife app for?
Manage the device, trigger remotely, create automated scenes, link other SmartLife/Tuya devices.
- What's the difference between Tuya and SmartLife?
Tuya is the tech platform. SmartLife is the free mobile app to control your Tuya devices.
- How does the motion detector work?
Tuya/SmartLife compatible. When motion is detected, it automatically triggers the fog via a SmartLife scene.
- How to avoid false alarms?
Add a delay between detection and trigger, use the detector alone for alerts then trigger manually, or add a camera to verify.
- What if I forget to deactivate when coming home?
With a 20-second delay, you get a notification and have time to cancel the scenario.
- Can I use a door sensor?
Yes. Any Tuya-compatible sensor can be used as a trigger.
- Is it compatible with Ajax alarm?
Yes. Via the Ajax Relay or WallSwitch module, integration takes 15 minutes through an Ajax Hub scenario. See the full Ajax integration guide →
- Can I use multiple generators?
Yes, no limit. Each generator is independent and can trigger based on the intruder's movement. The panic effect is immediate.
- How to install the generator?
Mount on the wall between 2.5 and 3 meters, plug it in, add it to SmartLife. About 30 minutes.
- Where to position the generator?
High up (2.5 to 3m), nozzle aimed at the center and bottom of the room. Fog tends to rise.
- How many triggers per cartridge?
One cartridge = one full trigger (~100 m³).
- How to replace the cartridge?
Unscrew the housing with the included key, remove the old cartridge and insert the new one.
- How much does a cartridge cost?
€59. Shelf life: 3 years. Very cost-effective compared to a monthly monitoring subscription.
- Is there a subscription?
Never. One-time purchase, no monthly fees.
- What is the warranty?
2-year legal warranty of conformity.
- Has the media covered Smoke-Defender?
Yes! TV report on France 3, Radio Bresse interview, Neozone article (10M+ readers).