10 Best Radon Eye Rd200 of 2025

Tested and Reviewed: Top 10 Radon Eye Rd200 deals with expert ratings from 8.1 to a perfect 10

March 2026 Edition

Editor's Choice

9.7

X-Sense

X-Sense Radon Detector for Home, Easy to Use, Zero Lab Fees, No Installation Required, Continuous Monitoring with Clear LCD Screen, XR0A-SR

Free Shipping

Editor's bottom line:

“This radon eye rd200 is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

Precise and High Performance: This radon detector complies with the standard requirements for performance parameters, and provides precise data within 24 hours; up to 95% accuracy after 7 days of continuous monitoring, improving over time
Crystal-Clear Readings (Offline Model): Say goodbye to apps and single data ; this radon detector is equipped with an innovative LCD that shows both short-term (the past 1/7/30/90 days) and long-term cumulative radon averages; it differs from the single test kit, no extra lab fees needed
Continuous and Stable Record: Equipped with a data retention feature, this radon detector retains previous data after battery outage and keeps recording after battery replacements; for data accuracy, please restore power within 4 hours
Set-and-Forget Convenience: This radon detector is ready out of the box, no setup needed; it is easy to use for the elderly; the battery life lasts up to 24 months under normal usage, thanks to low power consumption technology
Silent Monitoring: No flashing lights or beeping; this radon detector works silently in the background, constantly monitoring and displaying accurate radon levels when needed; just one-press on the backlight button , it will light up for viewing, ideal for bedrooms and nurseries
One for All: This radon detector is equipped with a reset button for unlimited re-usabilitymove room to room and reset with a single tap; no extra devices needed
Your Private Safety Companion: This 100% offline radon detector ensures privacy; manually input data through a secure portal to generate and download personalized reports for personal records or professional advice

Show Price

Picked by 397 people today

9.5

Ecosense Inc.

Ecosense RD200 RadonEye, Home Digital Radon Detector: Fast and Accurate Detection of Fluctuating Radon Levels, Short and Long Term Continuous Monitoring with Trend Charts

Free Shipping

Main Highlights

QUICK RESPONSE : First reading in 10 minutes and fast, accurate capture of constantly fluctuating radon levels
PROFESSIONAL GRADE COUNTING EFFICIENCY: 30 count per hour per picocuries per liter radon counting with patented ion chamber radon sensor technology
SMART VIEW RADON TREND CHART: Smart view of long term radon trend with hourly basis average data
SUPERB PERFORMANCE: Superb performance validated by trusted 3rd parties
WHAT YOU GET: RadonEye, User Guide, Power cable, Free App, Customer support via email & 12 months limited warranty

Show Price

9.5

Airthings

Airthings 325 Corentium Home 2 Smart Digital Radon Detector - Portable and Easy-to-use Radon Testing with Bluetooth connectivity and Humidity & Temperature Sensors

Free Shipping

Main Highlights

THE ORIGINAL RADON DETECTOR, UPDATED: The same proven accuracy as the best-selling original Corentium Home, now with Bluetooth connectivity and bonus temp and humidity sensors.
LONG TERM MONITORING: Monitor for cancer-causing radon gas continuously to stay informed. No lab fees, no waitingjust always-available, reliable results.
"SEE" RADON IN YOUR HOME: The app's graphs show how radon rises and falls. Take actions to reduce levels. Keep monitoring to ensure they stay low.
PERSONALIZED TIPS: Get tailored advice to confidently address your home's radon levels. Less doubt, more peace of mind.
TRUSTED BY PROS: Get the power of Airthings' patented radon sensing technology used and recommended by thousands of radon professionals and home inspectors.

Show Price

9.2

Airthings

Airthings Corentium Home Radon Detector 223 Portable, Lightweight, Easy-to-Use, (3) AAA Battery Operated, USA Version, pCi/L

Free Shipping

Main Highlights

FIRST OF ITS KIND: The first battery-operated, digital radon detector. Monitor your home without the need for an outlet.
LONG TERM MONITORING: Monitor for cancer-causing radon gas. Long term monitoring is necessary as radon levels fluctuate daily.
BE IN CONTROL: Take action if your radon levels are high. Know if your improvements have worked by checking the short term, on-screen readings.
RADON REPORT: Generate a radon self-inspection report easily, whenever you need it.
FAST RESULTS: On-screen results show both long and short term readings, for a quick overview of your radon levels.

Show Price

9.0

First Alert

First Alert Radon Gas Test Kit, RD1

Free Shipping

Main Highlights

The simple and safe way to test for radon
Listed under the EPA radon gas measurement proficiency program
Includes test materials and lab fees, excluding NJ state fees
Results are emailed within 72 hours of lab receipt
Recommended for use only within the United States

Show Price

8.8

Ecosense Inc.

Ecosense EQ100 EcoQube, Digital Radon Detector, Fast Capture of Fluctuating Levels, Short & Long-Term Continuous Monitoring with Trend Charts, Remote Data Access, Only Support 2.4 GHz Networks

Free Shipping

Main Highlights

PROFESSIONAL GRADE PATENTED HIGH COUNTING EFFICIENCY : First radon level reading in 10 minutes after power cable is connected, Radon counting sensitivity is 15 times better than the minimum required for professional testing
SMART HOME INTEGRATION: Seamlessly connects to smart home systems via IFTTT and its applets, enabling automated actions and enhanced control over indoor air quality
FAST AND ACCURATE CAPTURE OF CONSTANTLY FLUCTUATING RADON LEVELS: Since radon levels constantly fluctuate, continuous long-term monitoring is the surest way to protect your family
SMART VIEW OF SHORT AND LONG-TERM RADON TREND : Hourly data and graphs anytime, anywhere with the free Ecosense App(iOS/Android), this device requires the installation of a mobile app, and that users must allow notifications for the app in order to successfully connect the device
Wi-Fi CONNECTION IS REQUIRED : Ensure your EcoQube is within Wi-Fi range and connected to a 2.4 GHz network (disable 5 GHz steering on dual-band routers), For internet connection support, find the QR code in the package for a simple guide or refer to the Video for Wi-Fi connection troubleshooting
Do-It-Yourself (DIY) 72-Hour TESTNO LAB FEES: Start and finish a professional-grade radon test in the EcoQube app; results delivered automatically

Show Price

8.6

Airthings

Airthings 2960 View Plus - Battery Powered Radon & Air Quality Monitor (PM, CO2, VOC, Humidity, Temp, Pressure)

Free Shipping

Main Highlights

ALWAYS-ON AIR QUALITY SENSORS: WiFi connected indoor air quality monitor measuring radon gas, PM2.5 (air pollution detector), carbon dioxide (CO2), VOCs (airborne such as kitchen gases, fumes and cleaning products), humidity, temperature, and air pressure. The monitor requires the Airthings app to function. Operating Temperature 4 to 40°C / 39 to 104°F.Sensor type: Electrochemical
ACCURATE DIGITAL RADON DETECTOR: Radon is the number one cause of lung cancer among non-smokers and kills more than 6x the number of people than home fires and carbon monoxide poisoning combined.
SMART AIR QUALITY MONITORS YOU CAN TRUST: With 15 years of experience in indoor radon and air quality monitoring, Airthings has established trust among over 1,000,000 users who rely on its smart monitors for understanding and controlling their air health. An account is required to use the device, which only requires providing your email and name.
CONTINOUS MONITORING: Check your live data anytime and receive timely air quality notifications wherever you are. Track pollutants and contaminants before they become a problem with this always-on indoor radon gas, VOC, CO2, PM2.5 air quality monitor. The monitor and app both require internet access, with data saved securely in the cloud for seamless tracking and analysis.
FREE & FRIENDLY APP: Use the Airthings app to check current air quality readings and analyze trends over time. Get timely notifications and tips to improve your air. Check your local pollen forecast with data from Breezometer.
FIVE YEAR WARRANTY: Register for the optional and free extended warranty to increase your standard product warranty to five years.
EASY-TO-USE & CABLE-FREE : Quick and easy setup. Understated unit that is battery-powered for cable-free placement. Customizable eInk screen.

Show Price

8.3

Airthings

Airthings 2950 Wave Radon - Smart Radon Detector with Humidity & Temperature Sensor – Easy-to-Use – Accurate – No Lab Fees – Battery Operated - Free App

Free Shipping

Main Highlights

RADON DETECTOR: Radon is the number one cause of lung cancer among non-smokers and kills more than 6x the number of people than home fires and carbon monoxide poisoning combined
CONTINUOUS MONITORING: Radon gas fluctuates daily and is highly dependent on many factors such as weather conditions. Long-term monitoring is crucial to take control, understand long-term exposure and minimize potential health effects
EASY TO USE: Simply wave in front of the monitor to get a color-coded visual indication of the air quality (Green, Yellow, Red) or connect to the App to get detailed results
NO LAB FEES: Get both long and short term radon results straight to your smartphone via Bluetooth and easily generate a radon report through the Airthings Dashboard
FOR EVERY HOME: A battery-powered, smart radon detector which monitors radon gas all year round as well as humidity and temperature
CONNECTED: Airthings Wave 2nd Generation has Smartlink functionality, meaning it can connect to the Airthings Hub to bring your data online 24/7

Show Price

8.1

Aranet

SAF Aranet Radon Detector for Home: 10-Min Measurement, Temperature, Relative Humidity, Pressure, E-Ink Display, 7-Year Battery, Portable with Free App, Bq/m3 & pCi/L Selectable

Free Shipping

Main Highlights

RESULTS IN MINUTES: Patented ultra-low-power architecture for maximum efficiency - the only truly portable radon monitor on the market offering continuous radon measurement every 10 minutes, ensuring you stay informed about radon levels in your home's basement at all times.
BATTERY POWERED: Digital radon detector with up to 7-year lifetime using 2 AA batteries.
COMPREHENSIVE ENVIRONMENTAL MONITORING: This radon gas detector also measures temperature, relative humidity, and atmospheric pressure.
EASY TO USE: Portable, with an E-Ink display that provides a color-coded visual indication of radon levels (Green, Yellow, Red). Use it standalone or connect to the app to get detailed results.
VERSATILE: Multiple display options for real-time, 24h, 7d, or 30d average readings. Supports dual measurement units for radon (Bq/m³ & pCi/L) and temperature (°C & °F), making it ideal for homes in the USA, Canada, and Europe.

Show Price

8.1

Airthings

Airthings 2989 View Radon - Radon Monitor with Humidity & Temperature Detector - Battery Powered Mobile APP, WiFi, Alerts & Notifications

Free Shipping

Main Highlights

NEW RADON SENSOR TECHNOLOGY: Our most accurate, robust and sustainably-designed radon sensor, also measuring humidity and temperature
CUSTOMIZABLE DISPLAY: Set your Calm Tech Display view preferences or wave hand in front to trigger sensor levels, with simple color coding. Display up to four values on the eInk screen. Check complete readings in the app.
EASY TO USE: View data anytime, anywhere, with the free Airthings App (iOS/Android) and online dashboard with graphs, notifications and insights; wireless and WiFi connected device with up to 3 year battery lifetime
WIRELESS READY: Connects to your WiFi, or plug in with the USB cable and the View Radon becomes a hub, bringing other Airthings devices online
CONTINUOUS MONITORING: Detect radon early, minimize spread and manage your levels to keep your family safe
WHAT YOU GET: Airthings View Radon, 6 AA batteries, Quick Start Guide, Airthings Support and optional and free 5-year extended warranty to increase your standard product warranty

Show Price

Our Best Overall Choice

Best Choice

9.7

X-Sense

X-Sense Radon Detector for Home, Easy to Use, Zero Lab Fees, No Installation Required, Continuous Monitoring with Clear LCD Screen, XR0A-SR

Free Shipping

Editor's bottom line:

“This is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

Precise and High Performance: This radon detector complies with the standard requirements for performance parameters, and provides precise data within 24 hours; up to 95% accuracy after 7 days of continuous monitoring, improving over time
Crystal-Clear Readings (Offline Model): Say goodbye to apps and single data ; this radon detector is equipped with an innovative LCD that shows both short-term (the past 1/7/30/90 days) and long-term cumulative radon averages; it differs from the single test kit, no extra lab fees needed
Continuous and Stable Record: Equipped with a data retention feature, this radon detector retains previous data after battery outage and keeps recording after battery replacements; for data accuracy, please restore power within 4 hours
Set-and-Forget Convenience: This radon detector is ready out of the box, no setup needed; it is easy to use for the elderly; the battery life lasts up to 24 months under normal usage, thanks to low power consumption technology
Silent Monitoring: No flashing lights or beeping; this radon detector works silently in the background, constantly monitoring and displaying accurate radon levels when needed; just one-press on the backlight button , it will light up for viewing, ideal for bedrooms and nurseries
One for All: This radon detector is equipped with a reset button for unlimited re-usabilitymove room to room and reset with a single tap; no extra devices needed
Your Private Safety Companion: This 100% offline radon detector ensures privacy; manually input data through a secure portal to generate and download personalized reports for personal records or professional advice

Show Price

Deals are Live

Special Amazon deal ends in: