1.Real-time detecting CO2 level. Temperature and humidity detection is optional. 2.NDIR infrared CO2 module inside with four CO2 detection range selectable.3.CO2 sensor has Self-Calibration Algorithm and 15 years lifetime4.Mounted type and duct type selectable5.Special kind L series with 6 lights Indicates CO2 level and makes CO2 level clear show. 6.Special model with a touch button to operate a fan control.7.Design for HVAC, ventilation systems, offices, classrooms or other application places. 8.Providing up to three analog outputs for CO2/temperature/humidity.9.Easy choice of voltage or current via jumpers: 0~5VDC/0~10VDC/4~20mA/0~20mA.10.One relay output is available11.RS-485 communication interface is optional: 15KV antistatic protection, independent address setting 12.24VAC/VDC power supply can be connected with the wire terminals, also power adaptor plug connected into the socket available.13.CE-Approval

CO2 Indicator /Detector