Radon is a radioactive gas that enters buildings through foundation cracks and openings from soil, rocks, or groundwater. Long-term exposure to high radon levels can damage lungs and is the second leading cause of lung cancer after smoking.
This device is a portable radon detector intended for continuous monitoring of radon gas concentration in indoor air within homes and buildings. It is designed for personal, non-professional use.
Ensure the following items are included in the box:
The device is a compact, rectangular unit with an LCD screen, a single power button, and a Type-C charging port. It includes a mounting hole for the stand or lanyard.
The LCD screen displays the current radon concentration, unit of measurement (pCi/L or Bq/m³), battery status, and menu icons for historical data.
Power Button: A single multi-function button located on the device.
Remove the device from the packaging. Attach the stand for tabletop placement or attach the lanyard for hanging.
Connect the provided Type-C cable to the device's charging port and a USB power source. The device can operate while charging for continuous monitoring.
To Power On: Press and hold the power button for approximately 2-3 seconds until the screen activates.
To Power Off: Press and hold the power button for 2-3 seconds until the screen turns off.
For accurate long-term monitoring:
After powering on and placing the device, measurement begins automatically.
The first radon concentration reading will appear on the LCD screen after approximately 12 hours of continuous operation.
After the initial reading, the displayed radon level is updated every hour for real-time accuracy.
Access menus by short pressing the power button when the device is on.
Cycle through the DATA menu to view average radon concentrations for different timeframes:
Within the settings menu, you can switch the measurement unit between pCi/L and Bq/m³.
You can set a custom radon concentration level. The device will trigger audible and visual alarms when the measured level exceeds this threshold.
When the measured radon level exceeds your set threshold, the device will emit an audible beep and activate a visual indicator (such as a flashing icon) on the LCD screen.
The alarm threshold is the radon concentration level you define as the safety limit. Common recommended action levels are 4.0 pCi/L (US EPA) or 200 Bq/m³ (WHO).
If the alarm activates:
The device is suitable for both:
Radon levels naturally fluctuate. Focus on the long-term average (e.g., 48H, 96H) rather than a single hourly reading for a more accurate assessment of the environment.
Historical data is stored internally. Access different timeframes via the DATA menu using short presses of the power button.
The built-in battery lasts up to 45 days in sleep mode when not connected to power.
Use the provided Type-C cable. The device can be used while charging.
For permanent installation and uninterrupted monitoring, leave the device plugged into a power source using the Type-C cable.
Issue: The reading seems too high?
Solution: Movement may affect the first reading. Retest after stabilizing the device in its location for 12 hours.
Issue: No reading after restart?
Solution: Restarting resets the 12-hour measurement cycle. The device will begin a new test. Historical data is still accessible in the DATA menu.
Issue: Device moved accidentally.
Solution: Stabilize the device in the new desired location and start a new test. A new 12-hour initialization period is required for accurate readings.
Issue: Exposure to strong light (sunlight, flash).
Solution: Place the device in a dark area (e.g., a drawer) for 1–2 hours, then retest. Note that standard indoor lighting does not affect results.
Issue: High humidity environments.
Solution: Place a desiccant (silica gel packet) near the device's air inlet if needed, then start a new test.
Wipe the exterior with a soft, dry cloth. Do not use liquids, solvents, or abrasive cleaners.
Store in a cool, dry place away from direct sunlight and extreme temperatures.