Air quality Sensor, 55mm, White glossy finish. VOC gas sensor with calculation to carbon oxide equivalent. Integrated BCU. Fits 55mm systems/ranges: – GIRA Standard 55, E2,E22, Event, Esprit. – BERKER S1, B3, B7. – JUNG A500, Aplus, Acreation, AS500. – MERTEN 1M, M-Smart, M-Plan, M-Pure. Integrated temperature controller (PI, Two-position, PWM). Temperature limit values min/max, frost protection alarm. Air quality limit value. PI controller to regulate air quality. 4 stage controller to switch HVAC with single object for each stage. Measurement range from 400-2000ppm. 4 objects to display the air quality in visualizations (e.g. green, yellow, orange, red). Day/night objekt. Installation with support ring in wind sealed socket. Power supply via KNX bus without auxiliary voltage. Integrated bus coupling unit. 3 years warranty.