|
8403-096 OBSOLETE
- Co2 Sensor With Relay
The Bard 8403-096 CO2 sensor with relay is an OEM carbon dioxide transmitter used in ventilation and IAQ control setups to help equipment respond to rising CO2 levels in occupied spaces. This unit uses an NDIR-style sensing method and is commonly applied where demand-controlled ventilation is needed, providing a selectable control output (typically 4-20 mA or 0-10 VDC, depending on configuration) along with an onboard relay contact that can be set to trigger exhaust, outdoor air dampers, or an alarm circuit at a chosen CO2 setpoint. If you are replacing a failed sensor or correcting unstable CO2 readings, installing the correct Bard 8403-096 helps restore accurate signaling back to the controller so the system can maintain intended indoor air quality and ventilation performance.