Dwyer Wall mounted Carbon Dioxide CO2 Sensor

Dwyer CDT-2N40 Wall CO2 2000ppm/ No Temp, Universal output for CO2

Dwyer CDT-2N40-LCD Carbon Dioxide, Wall Mount, universal current/voltage output, North American Housing, LCD Display.

Dwyer CDT-2N40-RLY-LCD Wall CO2 2000ppm/ No Temp, Universal output for CO2, Relay Output & LCD display

Dwyer CDT-2N44 Wall CO2/Temp TX, select. Output, CO2 : ±40ppm plus 3% of reading, Temp: ±1?C @ 25?C

Dwyer CDT-2N44-LCD Wall Mount, CO2 / Temp Sensor, CO2 0-2000ppm, Universal Output, Temp Universal Output, LCD

Dwyer CDT-2N4B Wall CO2 2000ppm/ Temp - 10k type 2, Universal output for CO2