I intend to orphan the air-quality-sensor package. According to my knowledge, the sensor is no longer produced, at the vendors website I could only find a website from 2012 mentioning it, see https://web.archive.org/web/20120626011046/http://www.appliedsensor.com/products/indoor-air-monitor.html While I generally would be supporting old hardware, this kind of sensor physically degrades over time and won't give you reliable results anymore. Popcon reports only 7 installs. I do not think it is worth investing any more time in this. I also wouldn't object removal, but as long as it doesn't cause any problems being in the archive it might as well be kept. The package description is: The Indoor Air Monitor is a USB flash drive-shaped sensor which measures the surrounding's air pollution. This driver prints a list with all connected sensors and their current values to the commandline. Brand names and further information has been documented on http://wiki.micasaverde.com/index.php/CO2_Sensor. . The air quality is displayed on the hardware token by three indicator lamps with the colours green (= good), yellow (= average) and red (= bad), the same colors are also printed by this tool. Kind regards, Benedikt