Based on 433 reviews
Great assessment tool

A screen shot of meter creates nice content in my reports.

Systems Engineer and Operator

I have been working closely with Josh and really am impressed with the CO2 Multi Sensor System and its ease of use in operation for our facility. Great work.

great service

smooth ordering process, quick delivery, great price, works well- thanks so much!

Good for situational evaluation

I'm immunosuppressed, but with the "end of COVID" I will need to spend more time in rooms with multiple other people. CO2 is a good way of monitoring room ventilation, and I have been evaluating room safety based on the meter's readings. I have no way of evaluating the accuracy of the CO2 readings, but the humidity and temperature readings are spot on, so I feel the CO2 readings should be close enough for me to make a good estimate of a room's safety.

IAQ MINI CO2 Monitor
Stephen Glover
Very Accurate!

This device is working exactly as I expected. It's extremely accurate for being such a small device.

Worked fine and correct product!

Interesting tool to have when entertaining

It’s nice to be able to see when air quality is good or not. Knowing that we can open a windows or start a fan to circulate air helps folks feel safe.

Great Product!

We've been using the CO2 meter to take IAQ Measurements in buildings during Energy Star certification visits. It's been working well an updates quickly which helps us move around a building faster.

HIGHLY Satisfied

I just wanted to say our team is highly satisfied with the CO2 controller and we will hope to do future business with CO2Meter.


This product works excellently and CO2Meter always offers great technical support.

Open the windows

I am feeling better now I made our hose air tight. Put the power bill in the green. The CO2 in the red. Can’t win.

CO2 Storage Safety 3 Alarm Strobe Lights
Colonial Electric Supply Pleasantville NJ

Branch manager

Device Paid for Itself!

We purchased the Remote CO2 Storage Safety 3 Alarm and Strobe Lights for our facility. We had no issues with the devices and they are working quite well. They have alerted us to a couple of potential CO2 concentration issues, so in my opinion they have already paid for themselves in safety!!

Working Great!

We installed it in our main walk-in cooler that also contains our draft setup for the taproom. It seems to be working great! We ran some tests when we first installed it and it definitely triggered when we purposely ran some CO2 in front of the sensor. Thanks CO2Meter!

Remote CO2 Storage Safety 3 Alarm
Colonial Electric Supply Pleasantville NJ

Remote CO2 Storage Safety 3 Alarm

CO2Mini Indoor Air Quality Monitor

It works and levels seems reasonable, unlike the stuff you get on Amazon.

Basement studio apartment gives levels around 700±100, which is reasonable. Levels don't fluctuate radically throughout the day, but when cooking (gas stove), levels can quickly exceed 1500. Alarm only goes off when levels exceeded and can't be silenced.

We're looking ALOT better!

Since we purchased the RAD-0302 our CO2 in the office originally was ~2000ppm. After using the device and ventilating our space we are at 900ppm. Much better! Thanks CO2Meter.


Not that easy to purchase CO2.

IAQ MAX CO2 Monitor and Data Logger
Robert Tammera

IAQ MAX CO2 Monitor and Data Logger

K33 ICB 10% CO2 Sensor

Perfect for our purposes

We have two adult daughters who do not live with us and are at increased risk from Covid-19. We always open windows and try not to sit too close together and wear masks sometimes when they visit us. We bought the IAQ Mini CO2 monitor to learn if our efforts were having the desired effect in terms of air circulation. Turns out we're doing great; in fact, we don't need to open quite as many windows. The monitor is very easy to use. We especially like the color coded screen that lets us know right away, even from across a room, if we're getting into riskier territory. This is no guarantee, of course, but it's very helpful to let us see if air is circulating well in the room, which is an important factor in preventing Covid spread.

Top Notch Service!

Very much appreciate you guys jumping on the new unit and getting it done and shipped so fast. We will very likely be ordering at least 1 more of the new units and will be staggering the purchases in such a way as to avoid having 2 out of pocket at the same time. Was a pleasure meeting you and seeing some of your operations. I'll try not to take this new meter swimming. :-)

Worked Great!

The CO2 Meter worked out great and was an easy install. Thanks!!

Remote CO2 Storage Safety 3 Alarm Strobes
Jason Morin

Remote CO2 Storage Safety 3 Alarm Strobes