| Measures and displays temperature, humidity and heat index.
ElektorLabs (80)
| ESP32-based (home) automation computer to control almost anything.
![CO2 Guard [210043]](https://cdn.xingosoftware.com/elektor/images/fetch/dpr_1,w_800,h_340,c_fit/https%3A%2F%2Fwww.elektormagazine.fr%2Fassets%2Fupload%2Fimg%2Fpublic%2Foriginal%2Fproject-image-2jpg.jpg)
| CO2 400-2000 ppm, 3 LED's , level/temp sensor logged to ThingSpeak, buzzer, ESP8266
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