Kaiterra Laser Egg+ CO2: Indoor Air Quality Monitor (Tracks PM2.5, Fine Dust, CO2, Temperature, and Humidity)

I've gotten several AQI and CO2 meters. I have two of these. They are convenient and don't take up a lot of space. I can't address battery life, as I have mine plugged into outlets.

Overall, I am happy with the device. It is difficult to know if it is truly accurate or not, but I am happy to report there is a way to calibrate the CO2 sensor using the outdoor level inside the phone app. It is also great that you can download your data. Works with IFTTT and Apple HomeKit.However, in HomeKit, the device always reports that “an update is available,” to which, I have not been able to resolve. And, as you can see in HomeKit, data isn’t reported very well (you can find the current CO2 ppm, but you need to go into the sensor set tings). Manufacturer really needs to work on the software here!

Less than 2 years old and it died. Plug it in and it works for a few hours but then stops. Repeat, same. Repeat, same.Buy a different product from a different manufacturer.

Left outdoors, CO2 readings are up into the 900s ppm, which is ridiculous. This 2x trend continued indoors with two different LE2+CO2 units. I’ve tried various other CO2 sensors, including the Netatmo indoor air quality monitor (which I would recommend over this if you care about CO2 + HomeKit) and their CO2 measurements are all in line with each other.The PM2.5 sensor seems to be pretty on point, but you can save $50 by getting the regular LE2. I don’t know if I would trust this brand, anyway. Until then, I’m on the market for a HomeKit-compatible PM2.5/PM10 sensor.

Great product- we live in China and although we have air filters in every room we wanted to see how effective they were. The laser egg was very sensitive and alerted us to when air outside was really bad or when we needed to change our filters. Also appreciated the carbon dioxide readings.

It proved very useful for measuring indoor air quality during the hazardous air conditions we encountered in the Northwest due to the large California and Oregon wild fires this year.

Sensors seem accurate and tells us about low CO2 when we sleep with doors closed. When the windows open up, they’re back to normal levels.Less 1 Star because when it’s added to Homekit, Homekit says the egg has a firmware update but the app says firmware is up to date.Humidity and temp sensors work well too, not too sure about PM2.5 but it’s one of the few ones to feature this.

Easy to set up and use -