Review on 🌡️ Discover the Versatile CO2Meter AZ 0004: Temperature & Relative Humidity Monitoring Solution by Deshaun Fisher

The first impression is excellent. All measured values are displayed very clearly, the operating instructions show the operation very clearly. In terms of accuracy, it's close enough for my non-professional use. And now a short story. Recently I had to find out why my sleep quality is so poor. I thought I like sleeping, but lately I've been wanting to get up really early, but when I do, I just go back to sleep for a few hours. There is no ventilation system in my room, only a door and a window. . I usually sleep with both closed. But after seeing the testimony this morning, I'll change that! According to the device, good air is below 700 ppm; normal air less than 1000ppm; bad air above 1000 ppm. Pre-bed CO2 levels (door/window closed) this morning were around 600-700ppm, with 11PMCO2 levels at 8am-9am. 1500ppm! CO2 levels as of writing this review, with the window closed and the door wide open and a fan circulating the air in the room, is 537ppm. Contrary to my expectations, I woke up quite rested. I think this is due to the Germ Guardian air purifier running low all night, which is what I recently did to keep particle levels down (just because my newly purchased Dylos air quality meter showed high readings). Reasons for closing the window are dust and outside noise (cars/trains). As a possible solution to the dust problem, I could look at a special window grille that keeps out dust and other particles. Attached is a photo of my first reading in the morning waking up with the door/window closed (CO2 reading shows 1500ppm). The Dylos air monitor showed excellent air quality readings (HEPA air purifier was empty all night). UPDATE #1: Second night. If the room is empty with the doors and windows closed, the CO2 level drops to 400ppm. One person As we slept in the room, the CO2 level rose to 1000ppm in about 3 hours. If you open the window a little, the CO2 level drops to around 850 ppm. To reduce dust, I placed a cut-to-fit carbon air cleaner spacer in the window opening. This significantly slowed the movement of dust particles. How effective it is during the day remains to be seen. [Update: This wasn't that effective for PM2.5 during the day] UPDATE #2: About a year or two since the last update (whenever). I was motivated to update this review because of the real-time temperature. read. It's fairly accurate and fast compared to the cheaper digital thermometer I have. It seems to be updated every second. In addition to keeping the CO2 level in the room below 1000ppm, all I had to do was open the bedroom door about 5-8 inches, which would result in a stable CO2 level of 650-750ppm. Window in, although the bathroom is open. Now that it's summer and hot, opening a window at night lowers CO2 levels to 400-500ppm. According to these findings, if you want less CO2, you only need to open a window or keep a door open. ajar. Although showing real-time data is pretty cool. Wait, that's not the right word. Botanist. To open the window at night, I briefly use the Dylos air quality monitor near the window to see if I should close it. , PM2.5 readings are typically below 1000 (considered "reasonable" quality). The use of an air purifier reduces this value.