Recommended by Radon Report Card

Basic & Reliable Radon Detector

Set it and forget it continuous monitoring, zero effort. No cords, no outlets — just drop it anywhere. A portable, battery-powered radon monitor with a triple-average display that tracks your indoor radon levels around the clock.
Type: Continuous Monitor  | Unit: pCi/L  | Color: White
  • 2-year battery life — runs on 3 AAA batteries (included in the box)
  • Triple-average display — shows long-term, 24-hour, and 7-day averages on one screen
  • Place anywhere — foldable kickstand for tables or wall-mount via built-in hanging hole
  • Gets smarter over time — accuracy improves from ±10% (7 days) to ±5% (2 months)
  • Reliable detector that gets the job done — reads in pCi/L, the standard used by the EPA
$109.99 $130.99 Save $21.00
Free Priority Shipping Included
Batteries Included
Batteries Included
US Standard
US Standard
FCC Certified
FCC Certified

Why you need this

1 in 15 Homes Has Elevated Radon is Yours One of Them?

Radon is an invisible, odorless gas that seeps into homes from the ground. It's the leading cause of lung cancer after smoking, and the only way to know if it's in your home is to test for it.

This detector gives you 24/7 monitoring so you always know where your home stands — no guesswork, no lab wait times, no subscription.

The EPA recommends every home be tested for radon

Always watching

Set It and Forget It — Continuous Monitoring, Zero Effort

Pop in the included batteries, place the detector on a shelf or nightstand, and you're done. It immediately starts sampling the air and updates your readings automatically.

No apps to configure. No Wi-Fi needed. No ongoing costs. Just a clear, always-on display showing your radon levels at a glance.

Up to 2 years of continuous use on 3 AAA batteries

Truly portable

No Cords, No Outlets — Just Drop It Anywhere

Powered entirely by 3 AAA batteries (already in the box), this detector goes wherever you need it. Move it from your basement to your bedroom, test a vacation rental, or hand it to a friend.

The low-battery indicator gives you a heads-up before power runs out, so you're never caught off guard. At 2.76" wide and under an inch thick, it fits on any shelf, counter, or dresser.

Compact: 2.76" × 4.72" × 0.94"
How it reads

Three Averages, One Clear Picture

Unlike a single-number test kit, this detector shows three different time windows.

Long-Term Average
Tracks your radon exposure over months (up to 1 year).
Last 7-Day Average
A rolling weekly snapshot that smooths out daily swings.
Last 24-Hour Average
Updated every hour. Shows what your air quality looks like right now.
THE DETAILS

Technical Specifications

Product Specs
Type Continuous Radon Monitor
Display Unit pCi/L (US standard)
Power 3 × AAA batteries (included)
Battery Life Up to 2 years continuous
Dimensions 2.76" W × 4.72" H × 0.94" D
Color White
Mounting Foldable stand + wall hang hole
Accuracy ±10% (7 days), ±5% (2+ months)
Certifications CE, FCC
Humidity Limit Below 85% RH
Technical Specifications
Questions?

Frequently Asked Questions

Let's clear up the most common misconceptions about radon. Tap each myth to see the truth.

Myth "How long does it take to get an accurate reading?"
Fact

You'll see initial readings within 24 hours, but the detector gets more reliable over time. After 7 days, accuracy is within ±10%. Leave it running for 2 months and you'll get readings accurate to within ±5% excellent for a consumer-grade monitor.

Myth "Do I need to connect it to Wi-Fi or download an app?"
Fact

Nope. This detector is completely standalone. Just insert the included batteries and place it where you want to monitor. Readings appear directly on the built-in LCD screen no phone, no app, no account needed.

Myth "What happens if the batteries die or I restart it?"
Fact

Important to know: all stored data is cleared if the device loses power or is restarted. The low-battery indicator will warn you in advance so you can swap batteries before they're fully drained. We recommend keeping spare AAAs nearby.

Myth "Where should I place it for the best reading?"
Fact

Place it on the lowest livable floor of your home (usually a basement or ground-floor room). Keep it away from drafts, windows, and exterior doors. Avoid direct sunlight and areas with humidity above 85%. Set it at least 20 inches off the floor on a shelf, table, or dresser.

Myth "What level of radon should I be concerned about?"
Fact

The EPA recommends taking action at 4 pCi/L or above. The World Health Organization sets a lower threshold of 2.7 pCi/L. If your detector consistently shows readings at or above 4 pCi/L, contact a certified radon mitigation professional. Check your Radon Report Card grade first to understand your home's overall risk profile.

Myth "Is this a replacement for a professional radon test?"
Fact

This detector is an excellent ongoing monitor for your home. For real estate transactions or official documentation, you may still need a certified short-term or long-term test. But for day-to-day awareness and peace of mind, this gives you continuous data that a one-time test simply can't match.

Myth "What do I do if I have a reading above the recommended level?"
Fact

Don't panic elevated radon is common and very fixable. We can help connect you with locally certified professionals who offer affordable radon mitigation services through our discount network. Click here to get connected

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Protect Your Home. Start Testing Today.

You can't fix what you can't measure. For less than a dinner out, you can know exactly what's in the air your family breathes every day.