The Brandson CO2 meter is a compact and portable air quality monitoring device. It measures carbon dioxide concentration in PPM and provides a clear visual display ranging from green (very good to good) to yellow (moderate to poor) to red (very poor). Equipped with an NDIR sensor, it ensures precise measurements and is ideal for mobile use. The device has a CO2 alarm function that emits an acoustic signal if a freely selectable trigger value is exceeded. It also displays temperature and humidity, making it a versatile tool for monitoring indoor air quality. The backlight is dimmable and the automatic energy-saving mode ensures a long battery life of up to 100 hours. The CO2 meter comes with a USB Type-C charging cable and a carrying strap, making it easy to use and transport.