--- product_id: 408080452 title: "LFF Air Quality Monitor, PM2.5 Detector Indoor Air Quality Monitor, Temperature Tester, and Humidity Meter, Real Time Color Display with Backlight" brand: "lff" price: "$5.31" currency: USD in_stock: false reviews_count: 8 url: https://www.desertcart.us/products/408080452-lff-air-quality-monitor-pm2-5-detector-indoor-air-quality store_origin: US region: United States of America --- # Humidity precision sensor Temp updates every 30s PM2.5 detection every 5s LFF Air Quality Monitor, PM2.5 Detector Indoor Air Quality Monitor, Temperature Tester, and Humidity Meter, Real Time Color Display with Backlight **Brand:** lff **Price:** $5.31 **Availability:** ❌ Out of Stock ## Summary > 🌬️ Elevate your air game—because your lungs deserve VIP treatment! ## Quick Answers - **What is this?** LFF Air Quality Monitor, PM2.5 Detector Indoor Air Quality Monitor, Temperature Tester, and Humidity Meter, Real Time Color Display with Backlight by lff - **How much does it cost?** $5.31 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/408080452-lff-air-quality-monitor-pm2-5-detector-indoor-air-quality) ## Best For - lff enthusiasts ## Why This Product - Trusted lff brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Compact Yet Powerful:** Sleek tabletop design fits anywhere, delivering pro-grade air quality insights at your fingertips. - • **Vibrant Color Display:** Full VA-LCD screen with adjustable backlight for effortless monitoring from any angle. - • **Plug & Play Simplicity:** Intuitive 4-button control and USB power make setup a breeze—no tech headaches. - • **Precision You Can Trust:** Advanced sensor tech with optimized inlet/outlet design for ultra-accurate readings. - • **Breathe Smarter, Live Better:** Real-time PM2.5 updates keep your indoor air crystal clear. ## Overview The LFF Air Quality Monitor is a compact, 4-in-1 device that tracks PM2.5 particulate matter, temperature, humidity, and time with professional-grade sensors. Featuring a vivid full-color VA-LCD display and rapid update intervals (PM2.5 every 5 seconds, temp/humidity every 30 seconds), it offers precise, real-time indoor air quality insights. Powered via USB and designed for easy tabletop use, it’s the essential tool for health-conscious professionals aiming to optimize their living or workspace environment. ## Description Full description not available ## Features - 4-IN 1 AIR QUALITY MONITOR - Particulate matter (PM 2.5), humidity, temperature and time. PM2.5 is a major component of air pollution, and fine particles smaller than 2.5 micrometers (PM2.5) can move deeper into the respiratory tract when inhaled. You need to have an indoor air quality monitor for your family - PROFESSIONAL PRECISION DESIGN - This indoor air quality meter has advanded high-quality sensor that reflects air quality by detecting PM2.5 particulate matter. Reasonable inlet and outlet duct design enables internal sensors to accurately analyze each particle. Update PM2.5 index every 5 seconds and temperature and humidity every 30 seconds, more comprehensive understanding of the air quality - FULL VA-LCD COLOR SCREEN - Multi-color screen adopts omni-directional viewing angle technology, from any angle you can clearly see the PM2.5 indicator, temperature, humidity and time displayed by this air quality monitor indoor. The screen brightness can be adjusted through the buttons on the back - EASY TO USE - This indoor air quality tester only use 4 buttons achieve all operations. The air quality detector is plug and play, it uses a MicroB USB port, plug in the data cable to get PM2.5 index, temperature, humidity and time (unplug the time will change to the default time 12 :00) - PACKAGE INCLUDES - 1 × air monitor, 1 × User Manual, 1 × Micro USB Cable ( Input: 5V, 500mA; Length: 3.3 Ft ). Updated version: updated USB port, more durable; The detection accuracy of PM2.5 index and temperature and humidity is optimized. If you have any quality problems, please hesitate to contact us, we will try our best to help you selve problems ## Technical Specifications | Specification | Value | |---------------|-------| | Brand | LFF | | Style | Simple, Precise | | Power Source | Corded Electric | | Color | White-PM2.5 Monitor | | Product Dimensions | 1.2"D x 3.15"W x 3.15"H | | Item Weight | 0.37 Pounds | | Alarm | Audible | | Operating Humidity | 95 percent | | Compatible Devices | USB Port | | Upper Temperature Rating | 122 Degrees Fahrenheit | | Sensor Type | PM2.5 sensor | | Number of Items | 1 | | Manufacturer | LFF | | Part Number | LAQ924-1 | | Item Weight | 5.9 ounces | | Item model number | LAQ924-1 | | Size | Updated version | | Voltage | 5 Volts | | Mounting Type | Tabletop | | Included Components | Indoor Air Quality Meter, User Manual, Micro USB Cable | | Batteries Included? | No | | Batteries Required? | No | ## Product Details - **Brand:** LFF - **Style:** Simple, Precise - **Power Source:** Corded Electric - **Color:** White-PM2.5 Monitor - **Product Dimensions:** 1.2"D x 3.15"W x 3.15"H - **Item Weight:** 0.37 Pounds - **Alarm:** Audible - **Operating Humidity:** 95 percent - **Compatible Devices:** USB Port - **Upper Temperature Rating:** 122 Degrees Fahrenheit ## Images ![LFF Air Quality Monitor, PM2.5 Detector Indoor Air Quality Monitor, Temperature Tester, and Humidity Meter, Real Time Color Display with Backlight - Image 1](https://m.media-amazon.com/images/I/61RSV4mxoyL.jpg) ![LFF Air Quality Monitor, PM2.5 Detector Indoor Air Quality Monitor, Temperature Tester, and Humidity Meter, Real Time Color Display with Backlight - Image 2](https://m.media-amazon.com/images/I/716PtWn5QNL.jpg) ![LFF Air Quality Monitor, PM2.5 Detector Indoor Air Quality Monitor, Temperature Tester, and Humidity Meter, Real Time Color Display with Backlight - Image 3](https://m.media-amazon.com/images/I/619rhh8UskL.jpg) ![LFF Air Quality Monitor, PM2.5 Detector Indoor Air Quality Monitor, Temperature Tester, and Humidity Meter, Real Time Color Display with Backlight - Image 4](https://m.media-amazon.com/images/I/61N3sDD9VmL.jpg) ![LFF Air Quality Monitor, PM2.5 Detector Indoor Air Quality Monitor, Temperature Tester, and Humidity Meter, Real Time Color Display with Backlight - Image 5](https://m.media-amazon.com/images/I/71i7aqJLoYL.jpg) ## Questions & Answers **Q: does it store data so you can track air quality over time?** A: Dear customer, Thanks for your question. This air quality detector can detect PM2.5 index, time, temperature, and humidity in real time to facilitate real-time detection of air quality, but it cannot store data. Thanks for your suggestion, we will update it. **Q: can this product detect vaping?** A: My sources would tell me yes, but I am not the expert on this product. I could tell you that I had my essential oils on the other day, and it did detect the air and rated it higher is being polluted. **Q: Before i plunk down the money, what exactly does this tell you about your air? mold, pollen, allergens?** A: Dear customer, Thanks for your question. This Air Quality Monitor measures Particulate Matter that is between 0.3µm and 2.5µm in diameter. Particulate matter (PM 2.5) is a mixture of dust particles, dirt and droplets suspended in the air. Particulate matter (PM 2.5) can be directly emitted from wind-blown dust, mold spores, pollen and wildfires. Particulate matter (PM 2.5) found indoors may include particles that have migrated from outdoor sources like pollen or dirt and have originated from indoor sources like cooking, dusting, cooking, pet dander, vacuuming, burning candles, use of fireplaces or smoking. **Q: What's the difference between the basic version and the updated version?** A: Dear customer, Thanks for your question. Both the basic version and the updated version have the functions of detecting PM2.5 index, temperature, humidity and time. The updated version upgrades the appearance and internal chip according to customer feedback. Compared with the basic version, the detection accuracy of the updated version is improved and the USB interface is more stable. ## Customer Reviews ### ⭐⭐⭐⭐⭐ good tool *by D***Y on February 5, 2025* works good, seems accurate. i trust it. ### ⭐⭐⭐⭐ A bargain for PM2.5/Temp/Humidity sensor, but a poor timekeeper *by J***S on March 20, 2024* Living in the Pacific Northwest in the anthropocene, every summer is marred by multi-day wildfire smoke events that shift with the winds. Having a household air quality meter is a necessity, not a luxury.I've purchased four of these units, in my living room, brother's living room, daughter's living room and at my office. When the number worsens to unhealthy, we all turn on our HEPA air filters, and turn them off when the air is healthy again. My boss likes the one I put in my office wall at work, and while we don't have HEPA filtration, he's using readings to put pressure on better building filtration or additional work from home days when the office air quality is unsafe.This unit works well for PM2.5, temperature and humidity - the readings are very close to my other sensors, so I feel these are accurate. The display is clear and the colors are meaningful. No-one has any difficulty reading it. I can choose between metric (world standard) or obsolete (American) style sensor readings (degrees C or F, 24 hour or AM/PM time).The only real con to this product is that the clock does not track the time of day well at all. As a result, I've rated this product 3 stars on accuracy and 4 stars overall when it would be 5/5 instead. In this day of cheap electronics, there is no excuse for such poor clock operation. I still feel the PM2.5/temp/humidity sensor is worth the low price and everything else about this product is quite nice. ### ⭐⭐⭐⭐⭐ Small Device with accurate information *by K***H on October 18, 2023* This device accurately shows temperature. I bought this device to understand how quickly my other bedroom is cooling. It matches exactly with my nest thermostat. Regarding the air quality index, i see it varying when I open the windows vs when it's inside. This device is compact with limited information on humidity, temperature, air quality and time. If these are what you are looking for, go ahead. This is small and easily movable. ## Frequently Bought Together - LFF Air Quality Monitor, PM2.5 Detector Indoor Air Quality Monitor, Temperature Tester, and Humidity Meter, Real Time Color Display with Backlight - Temtop Air Quality Monitor, Indoor Thermometer Portable AQI PM2.5, Temperature, Humidity Detector for Home, Office or School, Air Quality Tester, Battery Powered, Magnetic Suction --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/408080452-lff-air-quality-monitor-pm2-5-detector-indoor-air-quality](https://www.desertcart.us/products/408080452-lff-air-quality-monitor-pm2-5-detector-indoor-air-quality) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-05-16*