Why Two Indoor Air Monitors Can Give Your Home a Broader View of Hidden Air Risks
Your home may already be monitoring the obvious risks.
But what about the ones you cannot see, smell, or taste?
Indoor air conditions can change quietly. Carbon monoxide can come from fuel-burning appliances. Combustible gas may be linked to leaks from gas lines, propane tanks, or fittings. Smoke particles may appear before a space looks visibly smoky. Temperature and humidity can shift in kitchens, garages, basements, RVs, and workshops.
Then there is radon — a naturally occurring radioactive gas that can enter homes from the ground and accumulate in lower-level spaces over time.
These risks do not always happen in the same room. That is why a single monitor may not give you the full picture.
FABISENSE 252 Series was designed around one simple idea:
Different spaces. Different risks. One broader view.
Why Indoor Air Monitoring Matters
Indoor air quality is often overlooked because many air risks are invisible.
A room can look clean while still having changing CO levels, gas presence, smoke particles, high humidity, or elevated radon levels. In many cases, users may not notice a problem until a monitor, alarm, or test result makes it visible.
According to the U.S. Environmental Protection Agency, people spend much of their time indoors, and some indoor pollutants may be found at levels 2 to 5 times higher than typical outdoor concentrations.
That does not mean every home is unsafe. It means indoor air deserves attention — especially in areas with fuel-burning appliances, poor ventilation, ground contact, or lower-level living spaces.
The Problem with Monitoring Only One Risk
Many homes rely on separate devices for separate risks.
You may have a smoke alarm.
You may have a CO alarm.
You may have a one-time radon test kit.
You may have a temperature or humidity meter.
But these devices often focus on only one category. They may also be fixed in one location, which can leave other rooms unmonitored.
Everyday spaces and lower-level rooms face different indoor air concerns:
Kitchens, garages, RVs, workshops, and utility areas may need awareness of CO, combustible gas, smoke particles, temperature, and humidity.
Basements, lower-level bedrooms, below-grade offices, and lower-level family rooms may need ongoing radon visibility.
This is why FABISENSE 252 Series includes two launch products instead of one.
Meet FABISENSE AirGuard 4
FABISENSE AirGuard 4 is a compact 4-in-1 indoor air monitor designed for everyday spaces.
It monitors four key categories:
- Carbon monoxide
- Combustible gas
- Smoke particles
- Temperature and humidity
AirGuard 4 is designed for spaces such as:
- Kitchens
- Garages
- RVs
- Workshops
- Cabins
- Basement utility areas
- Everyday home spaces
Instead of requiring Wi-Fi or app setup, AirGuard 4 focuses on simple local monitoring. Users can view readings on a 2.0-inch color display and receive local sound, light, and screen alerts when conditions reach warning levels.
What AirGuard 4 Is Designed to Monitor
Carbon Monoxide
Carbon monoxide is colorless and odorless, which makes it difficult to detect without monitoring equipment. AirGuard 4 uses an electrochemical CO sensor, with the CO sensor certified to UL standards.
Combustible Gas
AirGuard 4 uses a semiconductor sensor to monitor combustible gases such as natural gas, methane, LPG, propane, butane, and other combustible gases.
Smoke Particles
AirGuard 4 provides supplementary smoke particle monitoring for everyday spaces. This helps users gain additional environmental visibility, especially in areas where smoke particles may appear from cooking, equipment, or nearby sources.
Temperature and Humidity
Temperature and humidity can affect comfort, condensation, dampness, and general indoor conditions. AirGuard 4 combines these readings with air risk monitoring in one compact device.
Important Safety Note About AirGuard 4
AirGuard 4 is designed as a supplementary environmental monitoring and alert device.
It is not a replacement for legally required certified CO alarms, smoke alarms, or professional gas detection systems. Users should always follow local laws, building codes, and safety requirements for required alarms and detectors.
Meet FABISENSE RadonSense Pro
FABISENSE RadonSense Pro is a smart plug-in radon monitor designed for ongoing radon visibility in lower-level spaces.
It is especially suitable for:
- Basements
- Lower-level bedrooms
- Below-grade offices
- Lower-level family rooms
- Homes that need ongoing radon awareness
Unlike a one-time radon test kit, RadonSense Pro is designed to help users see how radon levels behave over time.
Radon levels can shift with seasons, weather, ventilation patterns, and mitigation system performance. A single test may provide a snapshot, while ongoing monitoring can help users understand trends across hours, days, and months.
Key Features of RadonSense Pro
RadonSense Pro includes:
- Alpha spectrometry monitoring with passive diffusion chamber
- First readings within approximately 30 minutes of powering on
- Trend windows for 3 hours, 24 hours, 7 days, and 30 days
- Green, yellow, and red color status display
- User-switchable units: pCi/L and Bq/m³
- Tuya Smart / Smart Life app access
- Current readings, historical trends, alarm history, and reports
- Local sound and light alerts
- App push notifications
- User-adjustable alert threshold
This makes RadonSense Pro especially useful for users who want connected radon visibility rather than only a one-time snapshot.
Important Safety Note About RadonSense Pro
RadonSense Pro is designed as a home monitoring tool for ongoing radon visibility.
It is not a substitute for professional radon testing required by law, real estate transactions, workplace regulations, or qualified radon mitigation services.
If your local guidelines require professional testing or mitigation, always follow those requirements.
Why Use AirGuard 4 and RadonSense Pro Together?
AirGuard 4 and RadonSense Pro are designed for different areas of the same home.
AirGuard 4 is for everyday spaces where CO, combustible gas, smoke particles, temperature, and humidity awareness matters.
RadonSense Pro is for lower-level rooms where radon can accumulate over time.
Together, they create a broader monitoring setup than either product alone.
That is why the FABISENSE 252 Series Safety Duo Bundle is the recommended setup for Indiegogo backers.
Recommended Home Setup
Use AirGuard 4 In:
- Kitchen
- Garage
- Workshop
- RV
- Cabin
- Basement utility area
- Everyday home spaces
Use RadonSense Pro In:
- Basement
- Lower-level bedroom
- Below-grade office
- Lower-level family room
- Ground-contact spaces where radon awareness matters
This setup helps users monitor different air concerns in the areas where they are most likely to appear.
Designed for Simple Daily Use
Both AirGuard 4 and RadonSense Pro are compact, plug-in and portable monitors.
AirGuard 4 is designed for local monitoring without Wi-Fi setup.
RadonSense Pro adds Wi-Fi connectivity through the Tuya Smart / Smart Life ecosystem, allowing users to check readings, trends, alarm history, and reports from the app.
Both products feature a 2.0-inch TFT color display, making readings easier to see at a glance.
Production-Ready for Indiegogo
FABISENSE 252 Series is preparing to launch on Indiegogo.
Both launch products are production-ready, with tooling, packaging, instruction documentation, and certification documentation in hand. Shipment is scheduled for October 2026.
For early backers, the campaign will include limited Super Early Bird rewards:
- AirGuard 4
- RadonSense Pro
- Safety Duo Bundle
The Safety Duo Bundle includes both AirGuard 4 and RadonSense Pro for broader indoor air awareness in one reward.
Why Back the FABISENSE 252 Series on Indiegogo?
FABISENSE is building the 252 Series for people who want more practical visibility into hidden indoor air concerns.
The campaign is designed around three simple choices:
- Choose AirGuard 4 for everyday spaces.
- Choose RadonSense Pro for lower-level radon visibility.
- Choose the Safety Duo Bundle for broader home monitoring.
For users who want a more complete indoor air monitoring setup, the Safety Duo Bundle provides the clearest value.
Who Is the FABISENSE 252 Series For?
FABISENSE 252 Series is designed for:
- Homeowners
- Apartment residents
- Families
- RV users
- Garage and workshop users
- People with basements or lower-level rooms
- Smart home users
- Backers interested in indoor air monitoring
- Anyone who wants broader visibility across different indoor spaces
Final Thoughts
Indoor air risks do not all happen in the same room.
Carbon monoxide, combustible gas, smoke particles, temperature, humidity, and radon each belong to different monitoring categories. Some are more relevant in kitchens and garages. Others are more relevant in basements and lower-level rooms.
That is why FABISENSE 252 Series combines two different monitors:
AirGuard 4 for everyday indoor air awareness.
RadonSense Pro for ongoing radon visibility.
Together, they give your home a broader view of the air risks that are easy to miss.
FABISENSE 252 Series is preparing to launch on Indiegogo. Follow the campaign and be ready to back early when Super Early Bird rewards become available.
FAQ
What is FABISENSE 252 Series?
FABISENSE 252 Series is a two-product indoor air monitoring lineup launching on Indiegogo. It includes AirGuard 4 and RadonSense Pro.
What does AirGuard 4 monitor?
AirGuard 4 monitors carbon monoxide, combustible gas, smoke particles, temperature, and humidity.
What does RadonSense Pro monitor?
RadonSense Pro monitors radon and provides ongoing radon visibility with trend tracking, sound and light alerts, and Tuya Smart / Smart Life app access.
Why are there two products instead of one?
AirGuard 4 and RadonSense Pro are designed for different spaces and different risks. AirGuard 4 is for everyday spaces such as kitchens, garages, RVs, and workshops. RadonSense Pro is for basements and lower-level rooms where radon awareness may be important.
Does AirGuard 4 replace a certified CO alarm or smoke alarm?
No. AirGuard 4 is a supplementary environmental monitoring and alert device. It is not a replacement for legally required certified CO alarms, smoke alarms, or professional gas detection systems.
Does RadonSense Pro replace professional radon testing?
No. RadonSense Pro is designed for ongoing home radon visibility. It is not a substitute for professional radon testing, qualified mitigation services, or testing required by law or real estate transactions.
Does RadonSense Pro support app control?
Yes. RadonSense Pro supports Tuya Smart and Smart Life app access for current readings, historical trends, alarm history, reports, and app push notifications.
When will the FABISENSE 252 Series ship?
Estimated delivery is October 2026.
What is the recommended setup?
The recommended setup is the Safety Duo Bundle, which includes one AirGuard 4 and one RadonSense Pro for broader indoor air awareness across everyday spaces and lower-level rooms.
