From the brand
Air Monitor & Camera Detector
Product Dimensions : 0.79 x 2.76 x 3.94 inches; 10.56 ounces
Item model number : AK22A
Batteries : 1 D batteries required. (included)
Date First Available : June 8, 2025
Manufacturer : YNAK
ASIN : B0FCDCWKJV
Best Sellers Rank: #4,531 in Industrial & Scientific (See Top 100 in Industrial & Scientific) #13 in Indoor Air Quality Meters
Customer Reviews: 4.3 4.3 out of 5 stars (167) var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
【16-in-1 Air Quality Monitor Indoor】Experience the ultimate indoor air quality monitoring with our 16-in-1 Air Quality Monitor, offering real-time detection of 9 key parameters including CO2, PM2.5, PM1.0, PM10, HCHO, TVOC, Temperature, Humidity, AQI, and Time. With 7 distinct AQI alert buzzers, this air quality tester ensures your family breathes with ease. (*Note: “16-in-1” refers to the combination of 9 key detectable parameters and 7 types of AQI alert buzzers.)
【External High-Precision Sensors with 0.001 Accuracy】Equipped with advanced external high-precision sensors, this device delivers unmatched accuracy (0.001 units) by directly sampling the air. Its innovative multi-sensor array and enhanced airflow design detect even the slightest environmental changes, allowing for instant response and optimal safety. (*Note: Avoid touching the sensors or exposing them to perfumes/strong odors to maintain accuracy.)
【Real-Time AQI Alert Buzzers】Our air quality monitor provides real-time monitoring and alerts for pollutants like CO2, PM2.5, PM1.0, PM10, HCHO, TVOC, Temperature, Humidity, and AQI, with 7 distinct alert functions. Stay informed with clear alerts and rest easy with a mute button to silence alarms. Your health and comfort are our priority
【Easy Time Adjustment】1.Switch Time Format: Click the “Time button” to toggle between 12/24-hour format. 2.Set Hours: Long press the “Time button” to enter setting mode. Use the “Alarm button” or “Brightness button” to adjust hours. 3.Set Minutes: Click the “Time button” again. Use the “Alarm button” or “Brightness button” to adjust minutes. 4.Confirm: Click the “Time button” to save settings.
【Quick °F/°C Switching】Switch between °F and °C units effortlessly by double-pressing the “Power button”.
【°F/°C Selector & Precision Sensors】Simply double-press the ‘Power button’ to switch the °F/°C unit. This temperature & humidity sensor features a high accuracy of ±1 to ±3 °F and ±2% to ±3%RH, making it ideal for measuring dynamic temperature and humidity in indoor environments
【Crystal Clear 7-inch Large Display】Enjoy a 7-inch LED display for sharp, clear air quality readings. Provides an instant, comprehensive view of your indoor air without navigating through menus, with three brightness settings for any lighting condition
【Cable-free & Long Battery Life】This portable indoor air quality meter features a 2500mAh battery for up to 8 hours of cordless use, allowing for consistent air quality monitoring throughout your home & 【Use Included Charging Cable & Adapter】 For optimal performance, always use the provided USB-C cable and adapter. Fully insert the cable until secure—the front indicator will glow red to confirm normal charging
【What You Get & Customer Support】Included in the package: 1 air quality monitor, 1 charging adapter, 1 USB-C cable, and 1 user manual. Our support team is at your service within 24 hours to assist with any queries（Note：Product Dimensions : 2.95 x 5.59 x 7.91 inches; 1.48 Pounds）
** Note：1.All measurements are calibrated to fall within industry-standard accuracy ranges, ensuring reliable and consistent performance. 2.Easily switch between 12-hour and 24-hour time formats by pressing the ‘Time button’ once during clock setting.
TN TN –
GOOD AND WORKS SO FAR
This air quality monitor is seriously impressive and easily one of the best bang-for-your-buck options if you want something accurate, user-friendly, and packed with features. We’ve used it throughout the house—keeping an eye on CO₂ while cooking, monitoring air quality overnight in bedrooms, and even bringing it to the office to assess airflow. It’s lightweight, super easy to set up, and has great battery life. The app connects quickly and streams real-time data, which is really handy if you use an old phone as a dedicated screen. I’ve paired mine with a smart plug to avoid constant charging, and it’s worked perfectly. What really sets this monitor apart is how much info it gives you at once—CO₂, temp, humidity, particulates, and more—all shown on a large, easy-to-read display. It’s fascinating to see how everyday things like candles, cooking, or just opening a window can instantly affect indoor air quality. As for accuracy, it holds its own. I tested it using a salt-and-water bag calibration method for humidity and got results well within the expected range. If you see small differences between two devices side by side, that’s just due to natural sensor variation and microclimate differences—not a flaw in the device. We ended up getting two—one for the main house and another for a separate area with a theater and game room—and both have been super reliable. They’ve completely changed how we think about indoor air. If you care about your environment and want a simple way to stay on top of air quality, this monitor is absolutely worth it. Highly recommended.
Tiffany Prather –
Reliable, real-time air insights—perfect for unpredictable country living
Living in the country means constant weather shifts, and this 16-in-1 Air Quality Monitor helps me stay ahead of indoor air changes. The 7″ display is clear and easy to read, showing CO2, TVOC, PM levels, humidity, and more—all in real time. I love the customizable AQI alerts that let me know when it’s time to ventilate or adjust my air purifier. It’s simple to set up and gives peace of mind, especially with kids and pets in the house.
Tom G. –
Excellent and Accurate Air Quality Monitor!
I’m really impressed with this device! The 7-inch display is bright and easy to read, showing all the key air quality indicators clearly. It reacts quickly to changes in the environment and gives reliable readings for CO₂, PM2.5, and humidity. The build feels solid and the setup was super simple—just plug and go. I also love that it combines so many functions in one unit, saving space and hassle. Definitely worth the price and gives me peace of mind about the air quality at home. Highly recommended!
WG –
Great unit. Works as described
Great unit. Works as described. Clear, vivid display showing all sensor readings. Easy to set time.
Gabriela Gonzalez –
Useful and accurate readings!
The display is easy to read , and I love that it can read data such as humidity, temperature , CO2, and pm2.5. It displays 9 metrics at a time, which is perfect for all the things I what it to show . I also like how I can use the upa dm down button for brightness and adjust volume as well. This monitor has deemed reliable and accurate so I have a peace of mind knowing I purchased a quality product.
Joey Lopez Design –
Unreliable – will go from alarms and all red indicators to green when rebooted
Its instructions specifically say you can recalibrate it to ensure its accuracy – which 1. is a lie because it says it’s a one button press, it’s actually just the power button and you have to do two button presses, you have to hold it to turn it off and then let go and hold it to turn it on again, this process takes several minutes while it shows “preheat…” on each item as it calibrates. But every time I reboot it the results are WILDLY different! I have no idea if it was accurate BEFORE or AFTER I shut it off and on again. I’m using this for my 3D Printing farm office, I was running 5 printers and it started to alarm, but I have another device (air filter) that also detects C02, VOCs and formaldehyde, showing the room is fine, moving them around, same results, so I reboot this device, and now it shows everything is fine. What??? Can’t trust this thing, I’m returning it.
MMD –
Works great!
I am extremely pleased with this air monitor. I am not super tech savvy and this was easy to set up and use right out of the box. It works great. The readings are in real time and seem very acurate and consistent. The font design on the display screen is large, so it is clear and simple to read. This has a chargeable battery (USB-C cable is included) which makes it so the monitor is portable, so you can test each room in your house. It has seven different customizable alarm modes to let you know when things are not safe. Although this monitors CO2 levels brilliantly, it also monitors the air for several other things that can be just as dangerous. With Winter coming, we will have the windows closed more often and so the indoor air quality is a concern. We bought this just to monitor our CO2 levels. But after getting this operating, we did indeed find that the level was elevated in our family room and firgured out that it was coming from our gas fireplace. We were able to get that problem quickly fixed. This gives me so much peace of mind knowing that the air will be safe and healthy for my family. Best purchase of the year!
Shopper –
Monitors comprehensively !!!
I got this Air Quality Monitor for our home and I am satisfied with its features and monitoring capabilities. This product can monitor different metrics like CO2, TVOC, PM2.5, temperature and humidity. Its portable and easy to setup. The bright LED screen is easy to read which shows real time air quality. The color-coded AQI bars are especially useful for quickly assessing the room condition.It monitors and refreshes data real time and keeps the data patterns up-to-date. Overall this is a great monitor for households and I am satisfied with its quality and features.