ACD1100 infrared carbon dioxide sensor: fast response, fast recovery time, strong anti-interference ability ACD1100 uses the principle of non-dispersive infrared (NDIR) to detect the concentration of carbon dioxide in the air. ACD1100 has the advantages of good selectivity, no oxygen dependence, , etc., with digital interface output, easy to use. ACD1100 is a high-performance sensor that integrates infrared absorption gas detection technology, precision optical path and high-precision signal detection circuit. ACD1100 has a wide range of application scenarios, suitable for air quality monitoring equipment, fresh air system, air purification equipment, HVAC equipment, etc. Colour:As Shown Material:ABS Due to different batches, there may be differences in product appearance and printed text, which not affect use Package Contents: 1 x CO2 Infrared Sensor Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.