Rotronic aSENSE wall mounted CO2 / air quality sensor controller unit with display.
This is a building controls / HVAC style wall sensor, likely used for air quality monitoring or ventilation control. It has a front LCD display, indicator lights and a hinged front cover.
The unit is untested, so it is being sold strictly as for parts, repair, replacement or professional installation. Exact compatibility is unknown, so please check the photos carefully before buying.
Cosmetically it is in used condition with general marks, light discolouration and signs of previous installation. There are visible fixing/adhesive marks on the front cover area, as shown in the photos.