This the Telaire T6713 / T67XX a Carbon Dioxide CO2 sensor for indoor air quality, energy saving application, control of ventilation, environmental purpose, farming, and clinical instrumentation. The T67XX is already factory calibrated sensor than can measure the concentration level
Wiring SenseAir LP8/S8 CO2 Carbon Dioxide NDIR Sensor
These are the SenseAir Miniature (Carbon Dioxide) CO2 Sensor featuring a non-dispersive small package infrared (NDIR) sensor, a new optical design that enable a precise and accurately measures carbon dioxide level up to 5% that runs on 30mA design for