Wireless air quality desktop sensor + temperature and humidity, 58x58x58mm. With LED display to signal room air quality. Additionally with a warning signal from level red. Power supply with the included power supply unit with USB-C connector. Stand-by loss only 0,1 watt. The sensor measures all volatile organic compounds (VOC) in the air and assigns them to a VOC index. The VOC index indicates the extent to which the indoor air quality has deteriorated or improved compared to the average VOC environment of the sensor. The temperature from -20°C to +60°C and the humidity from 0 to 100% are also measured. Every change in VOC index or a change of 5% in humidity or a change in temperature by 0.6° is signalled by wireless telegram to the Eltako wireless network within 30 seconds. If there is no change, a status telegram is sent every 10 minutes.