Honeywell C7232A1008 Co2 Sensor /Controller With Display & Relay 0–2000 Ppm 
Honeywell Inc.
Senseair
Co2 Sensor/Controller
C7232A1008
With Display And Relay (Wall Mount)
Co2 Range: 0-2000Ppm Selectable
Analog Output: 2-10Vdc Or 4-20Ma Selectable
Power: 24V Ac +/-20% 50/60Hz
3 Va Maximum Class 2 Wiring
Operating Temperature 32 To 122 F
4000Xx-01
Jj-02
94V-0
15864163
Made In Sweden
Weight: 120 Gm