This CO2 monitor delivers high-quality performance with an advanced NDIR sensor that uses infrared technology, ensuring high precision and excellent stability, even in spaces with potential interference. It’s impressively responsive, picking up changes in CO2 concentration in seconds. The simple, three-stage indicator system (green, yellow, red) gives you an at-a-glance view of air quality: green means safe (400-699 ppm), yellow is moderate (700-1499 ppm), and red signals danger (1499-5000 ppm). When CO2 levels hit 1500 ppm, an alarm goes off, and you can even customize the alarm threshold if you want.The sound alert is loud, which is great—it’s meant to get your attention. While there’s an option to mute it with one button, I’m leaving it on for peace of mind. The screen is clear and easy to read, thanks to its full-color LCD display. After five minutes without use, it enters an ECO mode to conserve battery, but it remains easy to read when dimmed. It also has a USB-C port, making it compatible with most chargers.Portability is excellent, too. It’s compact and comes with a lanyard, so you can take it anywhere—perfect for home, office, or even a grow tent. The built-in 1000mAh lithium battery charges up in three hours and can last for around 72 hours on a single charge. It’s ruggedly built with a durable rubber coating, ideal for keeping on a work belt or gear, which is exactly how I plan to use it.The package includes everything needed: a 2m charging cable, the monitor, and a manual. One quick tip: when you first use the device, set it in an open, uninhabited area and manually calibrate it for the most accurate readings.Overall, it’s a 10/10 from me—very satisfied. Inkbird never disappoints.

This C02 detector is compact and easy to calibrate. It came fully charged, with a nice paracord lanyard, and simple to follow directions. The ability to recharge it is super nice, and the low battery alarm isn't as ridiculous as a typical smoke detector. I could still hear the low battery alarm upstairs on the other side of the house.

Normally, I love inkBird . But This was extremely annoying. The battery kept dying out very quickly. It would need constant recharging or plugged in. I cannot see taking this anywhere on a full charge and having it last very long. Since then, I have no longer needed the detector and have thrown it away.

This Co2 detector ACTUALLY WORKS! It came packaged nicely and included a charging cable as well as a short clip to attach and hang. It has a wonderful size bright/visible display. The alarm is loud enough to alert but not enough to hurt your ears. So far the battery has lasted a long time and not needed a charge. Very easy to setup and adjust settings.

I’d be thrilled to share my experience with the INKBIRDPLUS Portable CO2 Detector, Mini Indoor CO2 Monitor, NDIR Sensor with Full Color LCD, for Home, Office, and Travel (PTH-10C). From the moment I unboxed it, I knew this device was something special. Let me take you through why I am so impressed with this portable CO2 detector.First off, the build quality is outstanding. The device has a sleek and modern design, which is both functional and aesthetically pleasing. It's compact enough to fit in your pocket or hang around your neck with the included lanyard, making it perfect for on-the-go use. The lightweight feel makes it easy to carry around without any hassle, whether you're at home, in the office, or traveling to different locations.The CO2 detection capabilities are what truly set this device apart. Utilizing an advanced NDIR sensor, it delivers highly accurate readings of carbon dioxide levels, a critical factor in maintaining a healthy indoor environment. The sensor's infrared technology ensures strong anti-interference and excellent stability, providing consistent and reliable data. This is crucial, especially for those who are conscious of indoor air quality or have health concerns related to air pollution.The full-color LCD display is vibrant and easy to read, offering clear information at a glance. I appreciate that it changes color based on CO2 concentration levels: green for safe, yellow for moderate, and red for high levels of CO2. This color-coded system is incredibly intuitive, allowing you to quickly assess the air quality without needing to read detailed numbers. It's a thoughtful design choice that adds to the user-friendly nature of the device.Another standout feature is the customizable alert system. The detector emits an audible alarm when CO2 levels exceed 1500ppm, but you can also set your own alert values based on your specific needs. This flexibility is a great addition, as it allows you to tailor the device to your environment and sensitivity levels.The portability and battery life are also impressive. With a built-in 1000mAh lithium battery, you can get up to 72 hours of use on a single charge. It only takes about 3 hours to fully recharge, and the included 2-meter charging cable gives you plenty of flexibility when finding a charging spot. The ECO mode feature, which kicks in after 5 minutes of inactivity, helps conserve battery life when you're not actively using the device.Setting up the CO2 detector is a breeze, but it's worth noting that you should calibrate it in an open and uninhabited environment for the first use to ensure accurate readings. This step is simple to do and ensures that your device is providing the most precise data possible.Overall, the INKBIRDPLUS Portable CO2 Detector is an exceptional product for anyone looking to monitor indoor air quality. It's versatile, reliable, and easy to use, with a design that fits seamlessly into any setting. Whether you're at home, in the office, or on the road, this CO2 monitor is a fantastic companion to ensure you're breathing clean and safe air. I highly recommend it to anyone interested in taking control of their indoor environment and promoting better health through air quality awareness.

This CO2 meter is an excellent choice for home use, especially for monitoring air quality around a reef aquarium. The bright display uses three colors—green, yellow, and red—to indicate CO2 levels at a glance, and the built-in alarm ensures you’re alerted if levels become unsafe. I use it near my reef tank to help maintain proper ventilation and prevent excess CO2 buildup, which can affect pH stability. Its compact design fits easily in any space, and the included lanyard with a clip makes it convenient to hang or carry. If you need a reliable CO2 monitor, this one is a great pick.

Seems to work as intended. Very simple design so it isn’t too difficult to use. Only negative is the instruction sheet. The writing is so small I had to use a magnifying glass to read. Other than that it’s pretty good.Update after using for 2 weeks. The battery life is not long. The charge only lasts for a few days before needing a recharge.

Awesome little co2 monitor ! AMAZING price , easy to operate and has a super loud alarm ! GREAT battery life ! Definitely purchase again if I need another one !