. With the Air Quality Alarm you will be aware of the air quality in your store. thanks to the 3 built-in sensors, the alarm measures the CO2 level, humidity and temperature. The alarm indicates this with a green light, an orange light with a voice message, or a red light with an alarm. That means you know exactly when to open a window and let fresh oxygen in. installing this product is easy because it calibrates automatically.
Supplied per piece.