Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Sensors |
| Origin | - |
| Detection Gases | VOC, CO2, Formaldehyde (HCHO) |
| Communication Interface | UART / TTL |
| Operating Voltage | 5V DC |
| CO2 Measurement Range | 400 - 5000 ppm |
| TVOC Measurement Range | 0 - 9.99 mg/m³ |
| Formaldehyde Range | 0 - 1.00 mg/m³ |
| Response Time | < 60 seconds |
| Operating Temperature | -10°C to 50°C |
| Dimensions | 32mm x 20mm x 6mm |
| Warm-up Time | Approx. 3 minutes |
Anonymous
Mar 24, 2026
Rating: 4/5
Good accuracy, needs warm-up
The sensor works well once it has warmed up for a few minutes. Initial readings can be a bit erratic, but after stabilization, the VOC and CO2 data looks reliable. Just remember to account for the warm-up time in your code.
Anonymous
Mar 17, 2026
Rating: 5/5
Excellent for indoor air monitoring
I used this to monitor air quality in my workshop. It picks up formaldehyde spikes when I'm using new wood adhesives. The compact size made it easy to fit into a custom enclosure.
Anonymous
Mar 07, 2026
Rating: 3/5
Works but power consumption is high
The sensor functions as advertised, but it draws more current than I expected during the heating phase. Not ideal for battery-powered projects unless you put it to sleep frequently.
Anonymous
Mar 04, 2026
Rating: 4/5
Solid hardware, documentation could be better
The hardware quality is top-notch and the pinout is standard. However, the protocol description for the formaldehyde data packet was a bit vague. Had to do some trial and error to parse it correctly.
Anonymous
Mar 02, 2026
Rating: 5/5
Great sensitivity
Very sensitive to changes in air quality. I tested it by spraying a little perfume nearby, and the VOC levels jumped immediately. Helps me know exactly when to open the windows.
Anonymous
Mar 01, 2026
Rating: 5/5
Perfect for my smart home project
This module integrates easily with my ESP32 setup. The UART output is stable, and the readings seem consistent when compared to my standalone CO2 meter. Great value for a 3-in-1 sensor.
Q: Does this module come with a library for Arduino?
A: We do not provide an official library, but the communication protocol is standard UART. Many users have created open-source libraries available on GitHub that work perfectly with this module.
Q: What is the lifespan of the sensor element?
A: Under normal operating conditions, the sensor element typically lasts between 2 to 3 years. Lifespan may vary depending on exposure to extreme contaminants or continuous high-concentration environments.
Q: Does it require calibration out of the box?
A: The module comes pre-calibrated from the factory. However, we recommend allowing it to run in fresh air for about 24 hours periodically to allow for automatic baseline correction, especially for the CO2 sensor.
Q: Is the output analog or digital?
A: The output is digital via a UART (TTL) interface. It does not provide analog voltage outputs for the gas concentrations.
Q: Can this detect carbon monoxide (CO)?
A: No, this specific model detects VOCs, Carbon Dioxide (CO2), and Formaldehyde (HCHO). It does not detect Carbon Monoxide (CO). Please check our store for dedicated CO sensors if needed.
Compact Home Range Hood, Portable USB Desktop Smoke Extractor for Hot Pot and BBQ Odor Removal
$39.00
Wen Zhengming Small Regular Script: Three Versions of Thousand Character Classic, Two Versions of Red Cliff Ode, Close-Up Copying Cards, Wen Zhengming Calligraphy Model Book
$10.00
Custom Name Stamp, Personalized Seal, Photo-Sensitive Signature Stamp
$7.04
Variable Frequency Drive Accessory RMIO Flat Cable for ACS800
$120.00
Qimeng Island WAKUKU 'Start Cheating Now' Series Blind Box, Celebrity Style Plush Toy
$69.00
Orthodontic Invisible Aligner Case Retainer Storage Box Teeth Corrector Denture Compact Portable Cleaning Box
$12.30
Sentury 990 Silent Tire - Sizes 185/195/205/215/225/50/55/60/65 R16/R17/R18/R19
$342.00
Adult Outdoor Rafting Gear – Large PVC Mesh Waterproof Dry Bag for Swimming and River Trekking
$7.26
Universal Reading Pen Storage Rack – Compatible with Xiao Ji Qiu Qiu, Tun Xiao Meng, Caterpillar, and JOJO Reading Pens
$10.80
![[Daimai Holds Micro-Needle Hair Transplant Patent] Micro-Needle Artistic Hairline Planting, 3000 Grafts for Hair Loss Treatment](https://www.gosteppe.com/cache/small/product/268890/legacy-main-a2a0f70c2e837e7e69cf16aa.webp)
[Daimai Holds Micro-Needle Hair Transplant Patent] Micro-Needle Artistic Hairline Planting, 3000 Grafts for Hair Loss Treatment
$71,950.00
PELICAN Air 1535 Lightweight Protective Case, Waterproof Photography Gear Carry-On Luggage with Free Shipping
$219.00
Beginner Calligraphy Set: Tian Yingzhang Ou Style Kaishu Copybook, Xuan Paper, and Red-Guided Practice Kit
$9.90
Three-Phase AC Permanent Magnet Synchronous Motor 15KW 380V Variable Frequency
$3,493.00
Genuine OEM Car Tires for Pickups, SUVs, and Vans - Sizes 145, 155, 165, 175, 185, 195 R12
$60.00
Freestanding Toilet Storage Rack - No-Drill Bathroom Organizer with Tank Shelf and Tissue Basket
$19.04
Packaging Machine for Salted Duck Eggs and Chicken Wings, Adjustable Frequency Speed MFL Drying Unit, Manufacturer Discount
$37,800.00
Portable Retainer Storage Case – Compact Box for Children's Orthodontic Appliances and Invisalign Aligners
$13.30
Tang Dynasty Ouyang Xun 'Stele of Lord Huangfu' Calligraphy Copybook, Close-Up Tutorial, Single Volume 79 Pages
$9.90
Marco Sketchbook - 8K Sketch Paper, 16K Colored Pencil Paper, A4 Marker Paper for Art Students and Kids
$9.30
Economic Pasteurization Machine, Commercial Pasteurization Tank, Small Dairy Processing Equipment, Direct from Manufacturer
$3,430.00
Authentic Cat PAI Little Companion Daily Blind Box Figurine, Cute Siamese Cat Desktop Pet, Action Figure Birthday Gift
$8.41
CANDLE.LAB | Non-Bleeding, Non-Seeping DIY Scented Candle Solid Thread Pigment - Fluorescent Dye Colors
$12.80
Small-Scale Yogurt Production Line, Pasteurized Milk Processing Equipment, Yogurt Sterilization and Fermentation Tank
$1,260.00
Blue Field Outdoor Lightweight Wear-Resistant Waterproof Dry Bag for Rafting and Stream Trekking, Storage Pouch for Miscellaneous Items, 10L/20L/40L/70L
$14.00
![[All-Inclusive Flat Rate] Single Imported Dental Implant | Includes Free Cleaning, Abutment, Fixture, and Crown](https://www.gosteppe.com/cache/small/product/268875/legacy-main-9f3e40fd1d280ff9fe710fa3.webp)
[All-Inclusive Flat Rate] Single Imported Dental Implant | Includes Free Cleaning, Abutment, Fixture, and Crown
$1,800.00
Acrylic Markers for Kids, Washable Art Watercolor Pens for Elementary Students, Opaque and Layerable, Direct Liquid Ink Core
$19.90
304 Stainless Steel Chain - Long/Short Link Lifting Chain, Hoist Chain, Clothesline, Swing, Pet Chain, Anti-Theft Chain
$1.53
Face Towel Storage Box for Disposable Cleansing Tissues and Cotton Pads, Wall-Mounted Bathroom Organizer
$19.90
France Arches Watercolor Paper Handmade 100% Cotton Artist Grade Sample Sheets Loose Paper 300G 640G Full Sheet Half Sheet 4K 8K 16K Medium and Rough Texture Watercolor Paint Paper
$20.80
Premium Ceramic Tea Canister Gift Box – Empty Packaging for Black, Pu'er, White, and Biluochun Tea
$121.00
![[Youxin Electronics] GP2Y0E03 Infrared Distance Sensor Module 4-50cm Range](https://www.gosteppe.com/cache/medium/product/74667/legacy-main-4da8cadc5fc82afe91b124e3.webp)
![[Trial Pack] Xianlang Complete Cat Treat Sticks Meal Packs Main Course Cans Freeze-Dried Cat Food Sample Snacks Gift Set](https://www.gosteppe.com/cache/medium/product/208273/legacy-main-9ec245ebf781f65a434ba854.webp)
