--- product_id: 314632197 title: "BTMETER Formaldehyde Detector PM2.5 PM10 Particulate Meter, Indoor Air Quality Tester Monitor HCHO TVOC Air Particle Dust for Home Office Factory Warehouse 5800S" brand: "btmeter" price: "£2.12" currency: GBP in_stock: false reviews_count: 5 url: https://www.desertcart.co.uk/products/314632197-btmeter-formaldehyde-detector-pm2-5-pm10-particulate-meter-indoor-air store_origin: GB region: United Kingdom --- # 2000mAh USB rechargeable battery 0-1.00mg/m³ HCHO electrochemical sensor 0-999.9μg/m³ PM2.5 & PM10 laser scattering BTMETER Formaldehyde Detector PM2.5 PM10 Particulate Meter, Indoor Air Quality Tester Monitor HCHO TVOC Air Particle Dust for Home Office Factory Warehouse 5800S **Brand:** btmeter **Price:** £2.12 **Availability:** ❌ Out of Stock ## Summary > 🌬️ Breathe smarter, live better — your personal air quality guardian! ## Quick Answers - **What is this?** BTMETER Formaldehyde Detector PM2.5 PM10 Particulate Meter, Indoor Air Quality Tester Monitor HCHO TVOC Air Particle Dust for Home Office Factory Warehouse 5800S by btmeter - **How much does it cost?** £2.12 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/314632197-btmeter-formaldehyde-detector-pm2-5-pm10-particulate-meter-indoor-air) ## Best For - btmeter enthusiasts ## Why This Product - Trusted btmeter brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Smart Data Logging:** Automatically records air quality data over preset intervals, so you never miss a pollution spike or trend. - • **All-Day Portability:** Lightweight 340g design with 15-hour USB rechargeable battery and auto power-off for hassle-free continuous monitoring. - • **Dual Particle Power:** Measures PM2.5 and PM10 particles down to 0.3μm with laser scattering tech for ultra-accurate dust and pollution tracking. - • **Total VOC Awareness:** Monitors TVOC levels from 0-10mg/m³ with fine 0.05mg/m³ resolution, empowering smarter ventilation decisions. - • **Precision Air Safety:** Detects formaldehyde with 5% accuracy and 0.01mg/m³ resolution to keep your indoor air truly safe. ## Overview The BTMETER BT-5800S is a professional-grade indoor air quality monitor combining an industrial electrochemical formaldehyde sensor, laser scattering particulate matter detection (PM2.5 & PM10), and a semiconductor TVOC sensor. It offers high-resolution readings, data logging with customizable intervals, and a rechargeable 2000mAh battery for up to 15 hours of continuous use. Ideal for home, office, or industrial environments, it empowers users to proactively manage and improve indoor air safety. ## Description We often tend to think that indoor air will be cleaner than the outdoor air, because outdoors you come across industrial gases, exhaust gases, etc. However, did you know that the indoor air of your house can be up to 10 times dirtier than the outdoor air?Not only your house, of course, but any closed area. Working areas, offices, classrooms, toddler rooms, places of worship, etc. are all examples of closed areas.What's more, we usually spend more time indoors than outdoors. So, it is really the time to slow down and learn more about our indoor air quality. BTMETER portable air quality monitor BT-5800S can help you to do that. It can detect house formaldehyde HCHO Particulate Matter PM2.5 PM10 and TVOC etc. Specifications: PM2.5 PM10 measurement principle: laser scatteringPM2.5 PM10 detection range: 0 ~ 999.9μg/m3PM2.5 PM10 resolution : 0.1μg / m3Minimum particle size: 0.3μmRelative accuracy: ±20% and ±15% μg/m3 Maximum valueFormaldehyde detection principle: electrochemical sensorHCHO detection: 0-1.00mg/m3Resolution of formaldehyde: 0.01mg/m3Response time (T90): <30sAccuracy:＜5% fsTVOC detection principle: thick film semiconductor gas sensorTVOC Detection effective range: 0-10mg / m3TVOC resolution: 0.05mg/m3Product Details: Battery capacity：2000mAhWorking time：about 15 hoursProduct size：196 * 95 * 46mmProduct weight：About 342g Review: I purchased mine in March 2025 to help with TVOC issues related to my furnace, and still use it now for formaldehyde detection and air particulate detection. While I don't have a pro-grade detector to compare this to, it seems to work fine relative to what I'd expect it to detect in specific situations. As I've read in other reviews, it started to crap out after 2 years so I have a while until I reach that point. One thing to note is that if it's been turned off for a while, once you turn it on and TVOC levels finally start showing, it seems to start maxed out at 5.0 mg/m^3 and slowly decrease to where the TVOC level actually is. If you see this, don't be alarmed! Just give it a few minutes, and assuming the TVOC in your air is good, it will slowly fall back to 0.05 mg/m^3 which appears to be its minimum value. Review: I originally bought a CO2 meter from desertcart (Amprobe CO2-100 very good meter!) and discovered that the CO2 level in my apt was marginally high due to the infrequent running of my HVAC. I am unable to run the fan only as the system is wired (easy fix). but after a lot of research I realized that code in many areas requires a fresh air intake (6" duct seems to be minimal) that pressurizes a dwelling (positive pressure) and prevents unfiltered air from being sucked into the house through cracks and voids. I am in the middle of this project. There is a lot of dust buildup in the house ongoing, so I ordered this meter to check on floating particulate in my condo. The numbers are really high, in the unhealthy 1 and 2 ranges with the AC off. The meter is advertised as +/- 20 %, which is plenty good enough. I checked the meter by measuring various places in the house and also outside. My outside readings are less than 12 and my inside readings are as high as 130. Not good. I also zipped the meter into a gallon zip lock bag while it was outside, and watched the reading as i moved around, to see if it was temperature sensitive. No significant change in readings. All the readings make logical sense, and the reading went down almost in half when I turned on the AC (cool mode). I have a MERV 13 4 inch thick filter replacement (From desertcart's main Air filter vendor, not a great product, too much air bypass), and this filter fits into a 1" filter ceiling mounted intake assembly. I recommend changing out your 1" filter for this filter!!!!! Will help prevent freeze ups! You will love this meter, and the price is very reasonable. BTW, my first meter had a measurement issue and the battery charge function did not work, so it only worked sort of when plugged into the charger. I return it UPS and received the replacement meter in less than 24 hours! WOW!!! ## Features - ✅【HCHO Detector】Designed with industrial electrochemical sensor, BTMETER portable formaldehyde meter BT-5800S can detect HCHO from 0-1.00mg/m with accuracy of 5%fs. High display resolution 0.01mg/m3. - ✅【Particulate Matter Tester】Not just a formaldehyde measuring instrument, but also an air particulate pm2.5 PM10 counter. BT-5800S measure PM2.5 PM10 based on upgraded laser scattering(built-in) principle, so it can accurately test particle dust PM2.5 and PM10 from 0 ~ 999.9μg/m3. Minimum particle size: 0.3μm. - ✅【TVOC Meter】Built with thick film semiconductor gas sensor, BTMETER air quality monitor BT-5800S can measure 0-10mg/m3 with 0.05mg/m3 resolution. Help you quick understand home air quality and improve room air ventilation system properly. - ✅【Data Storage】340g handheld tvoc detector with data record and storage functions. Preset your expected measurement time(1/2/3 hrs) and the interval measuring time(10/20/30 mins), then this indoor air quality monitor would detect air situation and record measurement data automatically. - ✅【USB Rechargeable】 Smart air quality sensor with 2000mAh lithium battery built-in, so you can charge it with USB cable(included). Standby time is around 15 hours after full-charged. Supports auto power off feature to save battery life. Quality air measurement tool with 365 days warranty and lifetime technical support. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07H3NXNDV | | ASIN | B07H3NXNDV | | Alarm | Visual | | Brand | BTMETER | | Built-In Media | 1* Formaldehyde Detector, 1*User manual | | Color | BT-5800S Air Particulate Meter | | Customer Reviews | 3.6 3.6 out of 5 stars (24) | | Customer reviews | 3.6 3.6 out of 5 stars (24) | | Date First Available | 19 October 2018 | | Enclosure Material | Plastic | | Is Discontinued By Manufacturer | No | | Item Weight | 0.75 Pounds | | Item model number | BT-5800S | | Manufacturer | BTMETER | | Manufacturer | BTMETER | | Model Number | BT-5800S | | Operating Humidity | 20 percent | | Power Source | Battery Powered | | Product Dimensions | 19.58 x 4.6 x 9.5 cm; 340.19 g | | Product Style | Industrial | | Sensor Type | Electrochemical | | UPC | 703546921951 | | Unit Count | 1.0 Count | ## Product Details - **Brand:** BTMETER - **Colour:** BT-5800S Air Particulate Meter - **Item weight:** 0.75 Pounds - **Power source:** Battery Powered - **Style:** Industrial ## Images ![BTMETER Formaldehyde Detector PM2.5 PM10 Particulate Meter, Indoor Air Quality Tester Monitor HCHO TVOC Air Particle Dust for Home Office Factory Warehouse 5800S - Image 1](https://m.media-amazon.com/images/I/71ZgPac1W-L.jpg) ![BTMETER Formaldehyde Detector PM2.5 PM10 Particulate Meter, Indoor Air Quality Tester Monitor HCHO TVOC Air Particle Dust for Home Office Factory Warehouse 5800S - Image 2](https://m.media-amazon.com/images/I/71molITpSnL.jpg) ![BTMETER Formaldehyde Detector PM2.5 PM10 Particulate Meter, Indoor Air Quality Tester Monitor HCHO TVOC Air Particle Dust for Home Office Factory Warehouse 5800S - Image 3](https://m.media-amazon.com/images/I/71IrUydVeCL.jpg) ![BTMETER Formaldehyde Detector PM2.5 PM10 Particulate Meter, Indoor Air Quality Tester Monitor HCHO TVOC Air Particle Dust for Home Office Factory Warehouse 5800S - Image 4](https://m.media-amazon.com/images/I/71sZdIYEDpL.jpg) ![BTMETER Formaldehyde Detector PM2.5 PM10 Particulate Meter, Indoor Air Quality Tester Monitor HCHO TVOC Air Particle Dust for Home Office Factory Warehouse 5800S - Image 5](https://m.media-amazon.com/images/I/71tLVdrFHjL.jpg) ## Questions & Answers **Q: is there a light to indicate full charge** A: Thanks for asking. Yes, the indicator light is Red during charging, and turn Green once it's full charged. **Q: What does it detect? specifically? dust? mold/pollen? co2?** A: Thanks for asking! BT-5800D is specifically detect PM2.5 and PM10 **Q: EU certification ?** A: Yes **Q: Does this test the air for asbestos?** A: Hi Paul, Please be kindly informed that thsi air particulater meter BT-5800D could measure particles diameter 2.5um~10um. If the asbestos you mentioned is within its measure range, then it would be OK :) ## Customer Reviews ### ⭐⭐⭐⭐ Review *by "***" on 7 July 2025* I purchased mine in March 2025 to help with TVOC issues related to my furnace, and still use it now for formaldehyde detection and air particulate detection. While I don't have a pro-grade detector to compare this to, it seems to work fine relative to what I'd expect it to detect in specific situations. As I've read in other reviews, it started to crap out after 2 years so I have a while until I reach that point. One thing to note is that if it's been turned off for a while, once you turn it on and TVOC levels finally start showing, it seems to start maxed out at 5.0 mg/m^3 and slowly decrease to where the TVOC level actually is. If you see this, don't be alarmed! Just give it a few minutes, and assuming the TVOC in your air is good, it will slowly fall back to 0.05 mg/m^3 which appears to be its minimum value. ### ⭐⭐⭐⭐⭐ Review *by R***E on 17 December 2020* I originally bought a CO2 meter from Amazon (Amprobe CO2-100 very good meter!) and discovered that the CO2 level in my apt was marginally high due to the infrequent running of my HVAC. I am unable to run the fan only as the system is wired (easy fix). but after a lot of research I realized that code in many areas requires a fresh air intake (6" duct seems to be minimal) that pressurizes a dwelling (positive pressure) and prevents unfiltered air from being sucked into the house through cracks and voids. I am in the middle of this project. There is a lot of dust buildup in the house ongoing, so I ordered this meter to check on floating particulate in my condo. The numbers are really high, in the unhealthy 1 and 2 ranges with the AC off. The meter is advertised as +/- 20 %, which is plenty good enough. I checked the meter by measuring various places in the house and also outside. My outside readings are less than 12 and my inside readings are as high as 130. Not good. I also zipped the meter into a gallon zip lock bag while it was outside, and watched the reading as i moved around, to see if it was temperature sensitive. No significant change in readings. All the readings make logical sense, and the reading went down almost in half when I turned on the AC (cool mode). I have a MERV 13 4 inch thick filter replacement (From Amazon's main Air filter vendor, not a great product, too much air bypass), and this filter fits into a 1" filter ceiling mounted intake assembly. I recommend changing out your 1" filter for this filter!!!!! Will help prevent freeze ups! You will love this meter, and the price is very reasonable. BTW, my first meter had a measurement issue and the battery charge function did not work, so it only worked sort of when plugged into the charger. I return it UPS and received the replacement meter in less than 24 hours! WOW!!! ### ⭐ Review *by L***A on 29 January 2022* I love this. It is so very helpful during the horrible northwest fire season. After too many years of living with intense smoke during the fire season and after spending some sizeable amount of money on a couple of good air cleaners....I thought I would check to see how well they are working or not with this device. As it turns out when the outside air is showing an aqi in the high 600's which is extremely hazardous to be in for any length of time. When the air cleaners are on the air is safe inside. If I test the air quality in a room that is closed off without access to the air cleaner there is a noticeable difference that the meter accurately measures. I am very confident of this device to a close accuracy. It will show better accuracy of the outside air where I live then what is reported in the farther away cities. 7.24.24 update After my initial excitement as written above, sadly this product turned out not so good after all. Last year we luckily didn't have much of a smoke season, so I didn't really use it, but once or twice. It didn't seem accurate at the time. Now with smoke coming in furiously I tried it again. It is clearly no longer accurate. I expected this to work longer than a year. Very disappointing ! ## Frequently Bought Together - BTMETER Formaldehyde Detector PM2.5 PM10 Particulate Meter, Indoor Air Quality Tester Monitor HCHO TVOC Air Particle Dust for Home Office Factory Warehouse 5800S - Mold Armor Do It Yourself Mold Test Kit for Home, Test Surfaces, Air Quality, and HVAC, Safe and Easy to Use, Effective Both Indoors and Outdoors - Air Formaldehyde (HCHO) DIY test kit - Know What's in the Air that Surrounds You (Pack of 1) --- ## 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.co.uk/products/314632197-btmeter-formaldehyde-detector-pm2-5-pm10-particulate-meter-indoor-air](https://www.desertcart.co.uk/products/314632197-btmeter-formaldehyde-detector-pm2-5-pm10-particulate-meter-indoor-air) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-06-06*