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AEGTEST

AEGTEST HOUND-3699

Radon monitor with a 2.1-inch touchscreen

  • Monitor
  • Battery
  • Screen
  • First reading in 1 hour
C-NRPP 2024/25 evaluation: Not includedSee the evidence
  • AEGTEST HOUND-3699
  • AEGTEST HOUND-3699, photo 2 of 4
  • AEGTEST HOUND-3699, photo 3 of 4
  • AEGTEST HOUND-3699, photo 4 of 4

Photos: AEGTEST

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  • PowerBattery
  • ReadingsScreen
  • First reading1 hour
  • C-NRPP 2024/25Not included
  • Every figure checked against the specifications AEGTEST publishes
  • Independent test results shown the same way for every product, unranked
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About this item

As AEGTEST states it

  • How it measures: High-precision radon pulse ionization sensor (maker's words); sampling method not stated on AEGTEST's current store
  • First reading: Within 1 hour
  • Reading updates: Refreshes the radon reading every 10 minutes
  • Display and app: Built-in display
  • Power: Battery: Charging data cable in the box; battery capacity and runtime not stated on AEGTEST's current store

The HOUND-3699 is a radon monitor from AEGTEST with a pulse ionization chamber, a 2.1-inch touchscreen and a charging data cable in the box: AEGTEST states 1-hour detection with readings refreshed every 10 minutes, alert thresholds you can set with visual and audible alarms, and up to 1 year of stored data exported as PDF reports over a cable. Its earlier store listed a 5000 mAh lithium battery, a range of 0.09 to 2000 pCi/L and accuracy figures at 5.4 pCi/L; the HOUND-3699 was not included in C-NRPP's 2024/25 consumer monitor evaluation.

What you get

AEGTEST lists one HOUND-3699 radon detector, a user manual and a charging data cable. The manual is in the box only: AEGTEST posts no copy online, and the general help page of its earlier store asked buyers looking for the instruction guide to contact the company. AEGTEST sells the HOUND-3699 in black, blue and white on its own store.

In the box and running costs

How it works

What it measures and how

The sensor, the sampling and the readings, then who has checked it

How it works

In our words, from the maker's documents

AEGTEST's earlier store gave the HOUND-3699's method in its specification table: a pulse ionization chamber for detection, with sampling by a passive diffusion chamber, so air reaches the chamber on its own rather than through a pump. The current store calls it a high-precision radon pulse ionization sensor. AEGTEST's earlier store also gave a general account of how its detectors measure: the sensor counts the alpha particles of radon in each sample of air it analyzes, and the longer the measurement runs, the more data points it has and the more accurate the readings become.

AEGTEST describes efficient 1-hour detection, with the radon reading refreshed every 10 minutes after that. By the earlier store's account, the display shows current radon levels and long-term averages at a glance.

The earlier store's table listed a measurement range of 0.09 to 2000 pCi/L, and an accuracy, or precision, given at 5.4 pCi/L (200 Bq/m³): about 10% after 7 days and about 5% after 2 months. AEGTEST does not say how those figures were measured. Its range is given in pCi/L, and no AEGTEST page says whether the screen can show Bq/m³, so that option is not stated by the maker.

The screen is a 2.1-inch high-resolution touchscreen for navigating and switching modes, and AEGTEST says it lets you customize the radon measurement settings and read the results even from a distance. The device stores up to 1 year of measurement data and automatically generates radon concentration PDFs, which you copy to a computer with the included cable; AEGTEST says no app or Bluetooth is required.

For power, AEGTEST's current store lists a charging data cable in the box and gives no battery capacity, runtime or charging time; the earlier store's table listed a 5000 mAh lithium battery, with dimensions of 3.2 x 3.2 x 5.1 inches and a weight of 1.41 lbs. For warnings, AEGTEST says the HOUND-3699 has customizable alert thresholds with both visual and audible alarms, but it does not give the default level or the range the threshold can be set to.

What the manufacturer says

AEGTEST's own statements, attributed

  • AEGTEST saysAEGTEST states efficient 1-hour detection, with readings refreshed every 10 minutes.
  • AEGTEST saysAEGTEST's earlier store lists an accuracy at 5.4 pCi/L of about 10% after 7 days and about 5% after 2 months.
  • AEGTEST saysAEGTEST's earlier store lists a measurement range of 0.09 to 2000 pCi/L.
  • AEGTEST saysAEGTEST says the HOUND-3699 stores up to 1 year of measurement data and generates PDF reports automatically.
  • AEGTEST saysAEGTEST states a three-year warranty: a 36-month after-sales service with lifetime technical support.

These are AEGTEST's own statements, attributed to it. They are not our findings, and we have not tested this product ourselves.

Independent evidence

C-NRPP 2024/25, recalls and studies

C-NRPP 2024/25
Not included in C-NRPP's 2024/25 evaluation

The Canadian National Radon Proficiency Program's 2024/25 comparison of consumer monitors did not include AEGTEST HOUND-3699. That is a fact about which devices took part, not a finding about this one: no result from that program exists for it either way.

Recalls
No Health Canada recall or advisory names this device.
Peer-reviewed studies
We found no peer-reviewed comparison that names this model.
Notes
  • No Health Canada recall or advisory and no CPSC recall names AEGTEST or a HOUND device, and C-NRPP's consumer monitor page lists none, approved or not approved (checked 2026-10-08).

C-NRPP is the Canadian National Radon Proficiency Program. Its 2024/25 results were published in May 2025.

Specifications

Specifications

Every figure as the maker states it

Compare side by side

The maker's figures

Type
Continuous monitor, 2.1-inch touchscreen, pulse ionization chamber, PDF export, charging data cable
How it measures
High-precision radon pulse ionization sensor (maker's words); sampling method not stated on AEGTEST's current store
First reading
Within 1 hour
Reading updates
Refreshes the radon reading every 10 minutes
Display and app
Built-in display
Power
Battery: Charging data cable in the box; battery capacity and runtime not stated on AEGTEST's current store
Units
Not stated on AEGTEST's current store

What is in the box

AEGTEST lists one HOUND-3699 radon detector, a user manual and a charging data cable. The manual is in the box only: AEGTEST posts no copy online, and the general help page of its earlier store asked buyers looking for the instruction guide to contact the company. AEGTEST sells the HOUND-3699 in black, blue and white on its own store.

AEGTEST's warranty page, which covers its store as a whole, promises a three-year warranty, described as a 36-month after-sales service with lifetime technical support. It excludes faults caused by unauthorized disassembly, damage from water or strong mechanical force, and normal wear that does not affect function, says AEGTEST is not responsible for loss of use or incidental damages, and points buyers to AEGTEST's support email for warranty help or repair.

What it costs to run

There is no lab fee and no battery to buy: the 5000 mAh lithium battery the earlier store listed is recharged with the cable in the box, and the PDF reports come off the device over the same cable. AEGTEST says no app or Bluetooth is required and mentions no subscription or cloud service, and it publishes no sensor life, recalibration interval or service schedule for the HOUND-3699.

Fit and setup

Who it fits, and how to use it

The fit, then setup and placement as the guidance asks

Who it fits

Good fit if, and look elsewhere if

Good fit if

  • You want a reading within an hour and a fresh one every 10 minutes.
  • You want a touchscreen and an alarm threshold you set yourself.
  • You want PDF reports on a computer without an app or Bluetooth.
  • You want a warranty term longer than one year.

Look elsewhere if

  • You want readings on your phone or alerts when you are away; AEGTEST describes no app or wireless link for the HOUND-3699.
  • You want a manual or a current specification sheet before buying; AEGTEST posts neither online, and its range and accuracy figures come from its earlier store.
  • You want a monitor that has been through C-NRPP's evaluation; the HOUND-3699 was not included in its 2024/25 round.
  • You need a result for a home sale; check what your state accepts before relying on any consumer monitor.

Setup and placement

4 steps

  1. AEGTEST's earlier store gave the HOUND-3699 its own placement advice: put it in the lowest lived-in level of your home, such as a basement if it is used regularly, or where your family spends the most time, and avoid kitchens, bathrooms and drafty areas. It described setup as placing the detector in the main living area, bedroom or basement and pressing start.
  2. The EPA's guidance for any home radon test agrees on the lowest lived-in level and the rooms to avoid, and adds the height and the spots to stay away from: in a room used regularly but not the kitchen or bathroom, at least 20 inches above the floor, and away from drafts, high heat, high humidity and exterior walls.
  3. On how long to run it, the earlier store recommended at least 48 hours for an initial screening and long-term monitoring of 3 to 12 months for the most accurate results, since radon levels fluctuate daily. C-NRPP's advice for any consumer monitor is similar: place it in a room occupied at least 4 hours a day, test for a minimum of 3 months, preferably in the heating season, and decide on the long-term average, with a follow-up long-term test if you have less than 91 days of data. The EPA's guidance is to fix a home at 4 pCi/L or more and to consider fixing between 2 and 4 pCi/L.
  4. The general help page of AEGTEST's earlier store also warned that strong light and humidity can affect reading accuracy, and that a new unit can read high at startup because it is exposed to radon during final factory testing; its fix was to blow on the air inlet with a fan for a few minutes, then restart the measurement.

How C-NRPP says to use any consumer monitor

  • Leave it in place for at least three months, ideally through the heating season, when indoor radon tends to be highest.
  • Put it in a room someone uses for at least four hours a day.
  • Decide about fixing your home from the long-term average, not a single day or week.
  • If you can only run a monitor for less than 91 days, follow up with a long-term test.

For where any radon test or monitor should sit in a home, see where to place a radon test.

Compare

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The same three rows for each, and the one difference that matters

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Questions

Questions people ask

5 questions about the AEGTEST HOUND-3699, answered

Asked about the HOUND-3699

Who makes the HOUND-3699?

AEGTEST, which sells it on its own online store. The store's own record gives Shenzhen, Guangdong, China as its location and prices in US dollars, and lists the United States among the countries it ships to. The AEGTEST trademark is registered in the US to Shenzhen Xunyi Electronic Commerce Co., Ltd., with radon detectors among the goods it covers.

How accurate does AEGTEST say the HOUND-3699 is?

AEGTEST's earlier store listed its accuracy at 5.4 pCi/L (200 Bq/m³) as about 10% after 7 days and about 5% after 2 months. The current store calls the sensor high-precision without a figure.

There is no independent result to compare with: the HOUND-3699 was not included in C-NRPP's 2024/25 consumer monitor evaluation. That is not a failed test; it means no independent result exists.

Can I set the alarm level?

Yes, by AEGTEST's account: the HOUND-3699 allows customizable alert thresholds, with both visual and audible alarms. AEGTEST does not publish the default threshold or the range of settings.

How do I get the readings onto a computer?

With the included cable. AEGTEST says the HOUND-3699 generates radon concentration PDFs automatically and that you export them directly to your computer, with no app or Bluetooth required. The general help page of its earlier store gave the same route for its detectors: use the included data cable to transfer readings to your computer, where a PDF report of concentration levels is generated.

How is it different from the HOUND-3786?

Both are AEGTEST pulse ionization detectors that refresh every 10 minutes and make PDF reports. AEGTEST says the HOUND-3699 exports its reports to a computer with the included cable; for the HOUND-3786 it names a phone or computer and does not say how. The HOUND-3699 has a 2.1-inch touchscreen and stores up to 1 year of data; the HOUND-3786 has a 3.5-inch color LCD with button controls and stores over 1.5 years. Only the HOUND-3699 has a range and accuracy figures from AEGTEST, on its earlier store page.

What to do next

Updated October 9, 2026