Collection: IAQ (Indoor Air Quality)
Indoor air quality (IAQ) sensors help monitor environmental conditions that affect comfort, health, and productivity. Track indoor air quality indicators such as VOCs and ventilation conditions so building systems can respond with cleaner, healthier air. E-Controls offers IAQ sensing solutions from Greystone, Siemens, and Senva for commercial applications.
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Senva AQ2W-ACAAAAD TotalSense IAQ Indoor, analog, CO2, OLED Display
Regular price $300.95 USDRegular priceSale price $300.95 USD -
Siemens QPA2062D Room Sensor CO2, Temperature, Relative Humidity with Display, 0-10V
Regular price $665.33 USDRegular priceSale price $665.33 USD -
Siemens QPA2062 Room Sensor CO2, Temperature, Relative Humidity, 0 to 10V
Regular price $613.21 USDRegular priceSale price $613.21 USD -
Siemens QPA2060D Room Sensor CO2 and Temperature with Display, 0 to 10V
Regular price $503.69 USDRegular priceSale price $503.69 USD -
Siemens QPA2060 Room Sensor CO2 and Temperature, 0 to 10V
Regular price $455.70 USDRegular priceSale price $455.70 USD -
Siemens QPA2002D Room sensor CO2 and VOC with Display, 0 to 10V
Regular price $535.10 USDRegular priceSale price $535.10 USD -
Siemens QPA2002 Room Sensor CO2 and VOC, 0 to 10V
Regular price $465.46 USDRegular priceSale price $465.46 USD -
Siemens QPA2000 Room Sensor CO2, 0 to 10V, Room Sensor CO2, 0 to 10V
Regular price $344.95 USDRegular priceSale price $344.95 USD -
Siemens QPM2162 IAQ Duct Sensor CO2, Temperature, Relative Humidity, 0 to 10V
Regular price $682.20 USDRegular priceSale price $682.20 USD -
Siemens QPM2160D IAQ Duct CO2, Temperature Sensor, 0-10V, Display
Regular price $671.26 USDRegular priceSale price $671.26 USD -
Siemens QPM2160 IAQ Duct Sensor CO2 and Temperature, 0 to 10V
Regular price $599.15 USDRegular priceSale price $599.15 USD -
Siemens QPM2102D IAQ Duct Sensor CO2 and VOC with Display, 0 to 10V
Regular price $621.43 USDRegular priceSale price $621.43 USD -
Siemens QPM2102 IAQ Duct Sensor CO2 and VOC, 0 to 10V
Regular price $528.43 USDRegular priceSale price $528.43 USD -
Siemens QPM2100 IAQ Duct Sensor CO2, 0 to 10V
Regular price $463.00 USDRegular priceSale price $463.00 USD -
Siemens QPA2284.FWSC, Siemens QPA2284.FWSC Room CO2, Humidity and Temperature Sensor, Full Feature, Siemens Logo, Tool Port, For Siemens TEC Controllers
Regular price $662.30 USDRegular priceSale price $662.30 USD -
Siemens QPA2284.FWNC, Siemens QPA2284.FWNC Room CO2, Humidity and Temperature Sensor, Full Feature, No Logo, Tool Port, For Siemens TEC Controllers
Regular price $662.30 USDRegular priceSale price $662.30 USD -
Siemens QPA2282.EWSC, Siemens QPA2282.EWSC Room CO2, Temperature Sensor, No HMI, Siemens Logo, Tool Port, For Siemens TEC Controllers
Regular price $454.16 USDRegular priceSale price $454.16 USD -
Greystone CERMC59 Room Carbon Dioxide Sensor, 0-2000 ppm, 10,000 Ohm NTC Thermistor, ±0.2 C
Regular price $204.80 USDRegular priceSale price $204.80 USD -
Greystone CERMC24 Room Carbon Dioxide Sensor, 0-2000 ppm, 10,000 Ohm, type 2, NTC Thermistor, ±0.2 CType 59 - 10,000 ohm NTC Thermistor ±0.2°C
Regular price $200.51 USDRegular priceSale price $200.51 USD -
Greystone CERMC20 Room Carbon Dioxide Sensor, 0-2000 ppm, 20,000 Ohm, NTC Thermistor, ±0.2 CType 24 - 10,000 ohm Type 2 NTC Thermistor ±0.2°C
Regular price $200.51 USDRegular priceSale price $200.51 USD -
Greystone CERMC14 Room Carbon Dioxide Sensor, 0-2000 ppm, 10,000 Ohm, type 3, NTC Thermistor, ±0.2 C c/w 11K shunt resistorType 20 - 20,000 ohm NTC Thermistor ±0.2°C
Regular price $204.80 USDRegular priceSale price $204.80 USD -
Greystone CERMC13 Room Carbon Dioxide Sensor, 0-2000 ppm, 1000 Ohm Nickel, Class B, DIN 43760Type 14 - 10,000 ohm Thermistor ±0.2°C c/w 11K Shunt Resistor
Regular price $204.80 USDRegular priceSale price $204.80 USD -
Greystone CERMC12 Room Carbon Dioxide Sensor, 0-2000 ppm, 1000 Ohm Platinum, IEC 751, 385 Alpha, thin filmType 13 - 1000 ohm Nickel RTD ±0.3°C
Regular price $204.80 USDRegular priceSale price $204.80 USD -
Greystone CERMC08 Room Carbon Dioxide Sensor, 0-2000 ppm, 2.252K Ohm, NTC Thermistor, ±0.2 CType 12 - Pt1000 - 1000 ohm Platinum RTD ±0.3°C
Regular price $204.80 USDRegular priceSale price $204.80 USD -
Greystone CERMC07 Room Carbon Dioxide Sensor, 0-2000 ppm, 10,000 Ohm, type 3, NTC Thermistor, ±0.2 CType 8 - 2.252K ohm NTC Thermistor ±0.2°C
Regular price $200.51 USDRegular priceSale price $200.51 USD -
Greystone CERMC06 Room Carbon Dioxide Sensor, 0-2000 ppm, 3000 Ohm, NTC Thermistor, ±0.2 CType 7 - 10,000 ohm Type 3 NTC Thermistor ±0.2°C
Regular price $200.51 USDRegular priceSale price $200.51 USD -
Greystone CERMC05 Room Carbon Dioxide Sensor, 0-2000 ppm, 1801 Ohm, NTC Thermistor, ±0.2 CType 6 - 3000 ohm NTC Thermistor ±0.2°C
Regular price $200.51 USDRegular priceSale price $200.51 USD -
Greystone CERMC02 Room Carbon Dioxide Sensor, 0-2000 ppm, 100 Ohm Plat. IEC 751, 385 Alpha, thin filmType 5 - 1800 ohm NTC Thermistor ±0.2°C
Regular price $204.80 USDRegular priceSale price $204.80 USD -
Greystone CERMC00 Room Carbon Dioxide Sensor, 0-2000 ppm, No temperature sensorType 2 - Pt100 - 100 ohm Platinum RTD ±0.3°C
Regular price $192.12 USDRegular priceSale price $192.12 USD -
Greystone CD2RMCVXXXXXXX Room CO2 Sensor, 0-2,000 ppm, Viewable LCD, No temperature sensor, No relay, No override, No setpoint
Regular price $318.97 USDRegular priceSale price $318.97 USD -
Greystone CD2RMCVXXRXXXX Room CO2 Sensor, 0-2,000 ppm, Viewable LCD, No temperature sensor, Adjustable relay, No override, No setpoint
Regular price $334.30 USDRegular priceSale price $334.30 USD -
Greystone CD2RMCV24XXXXX Room CO2 Sensor, 0-2,000 ppm, Viewable LCD, 10,000 Ohm, type 2, NTC Thermistor, ±0.2 C, No relay, No override, No setpoint
Regular price $327.38 USDRegular priceSale price $327.38 USD -
Greystone CD2RMCV24XXP00 Room CO2 Sensor, 0-2,000 ppm, Viewable LCD, 10,000 Ohm, type 2, NTC Thermistor, ±0.2 C, No relay, No override, 0 - 10,000 ohms
Regular price $332.51 USDRegular priceSale price $332.51 USD -
Greystone CD2RMCV24XSXXX Room CO2 Sensor, 0-2,000 ppm, Viewable LCD, 10,000 Ohm, type 2, NTC Thermistor, ±0.2 C, No relay, Override switch, No setpoint
Regular price $332.51 USDRegular priceSale price $332.51 USD -
Greystone CD2RMCV24RXXXX Room CO2 Sensor, 0-2,000 ppm, Viewable LCD, 10,000 Ohm, type 2, NTC Thermistor, ±0.2 C, Adjustable relay, No override, No setpoint
Regular price $342.72 USDRegular priceSale price $342.72 USD -
Greystone CD2RMCV20XXXXX Room CO2 Sensor, 0-2,000 ppm, Viewable LCD, 20,000 Ohm, NTC Thermistor, ±0.2 C, No relay, No override, No setpoint
Regular price $327.38 USDRegular priceSale price $327.38 USD -
Greystone CD2RMCV20XXP00 Room CO2 Sensor, 0-2,000 ppm, Viewable LCD, 20,000 Ohm, NTC Thermistor, ±0.2 C, No relay, No override, 0 - 10,000 ohms
Regular price $332.51 USDRegular priceSale price $332.51 USD -
Greystone CD2RMCV20XSXXX Room CO2 Sensor, 0-2,000 ppm, Viewable LCD, 20,000 Ohm, NTC Thermistor, ±0.2 C, No relay, Override switch, No setpoint
Regular price $332.51 USDRegular priceSale price $332.51 USD -
Greystone CD2RMCV20RXXXX Room CO2 Sensor, 0-2,000 ppm, Viewable LCD, 20,000 Ohm, NTC Thermistor, ±0.2 C, Adjustable relay, No override, No setpoint
Regular price $342.72 USDRegular priceSale price $342.72 USD -
Greystone CD2RMCV14XXXXX Room CO2 Sensor, 0-2,000 ppm, Viewable LCD, 10,000 Ohm, type 3, NTC Thermistor, ±0.2 C c/w 11K shunt resistor, No relay, No override, No setpoint
Regular price $331.68 USDRegular priceSale price $331.68 USD -
Greystone CD2RMCV14XXP00 Room CO2 Sensor, 0-2,000 ppm, Viewable LCD, 10,000 Ohm, type 3, NTC Thermistor, ±0.2 C c/w 11K shunt resistor, No relay, No override, 0 - 10,000 ohms
Regular price $336.74 USDRegular priceSale price $336.74 USD -
Greystone CD2RMCV14XSXXX Room CO2 Sensor, 0-2,000 ppm, Viewable LCD, 10,000 Ohm, type 3, NTC Thermistor, ±0.2 C c/w 11K shunt resistor, No relay, Override switch, No setpoint
Regular price $336.74 USDRegular priceSale price $336.74 USD -
Greystone CD2RMCV14RXXXX Room CO2 Sensor, 0-2,000 ppm, Viewable LCD, 10,000 Ohm, type 3, NTC Thermistor, ±0.2 C c/w 11K shunt resistor, Adjustable relay, No override, No setpoint
Regular price $347.01 USDRegular priceSale price $347.01 USD -
Greystone CD2RMCV13XXXXX Room CO2 Sensor, 0-2,000 ppm, Viewable LCD, 1000 Ohm Nickel, Class B, DIN 43760, No relay, No override, No setpoint
Regular price $331.68 USDRegular priceSale price $331.68 USD -
Greystone CD2RMCV13XXP00 Room CO2 Sensor, 0-2,000 ppm, Viewable LCD, 1000 Ohm Nickel, Class B, DIN 43760, No relay, No override, 0 - 10,000 ohms
Regular price $336.74 USDRegular priceSale price $336.74 USD -
Greystone CD2RMCV13XSXXX Room CO2 Sensor, 0-2,000 ppm, Viewable LCD, 1000 Ohm Nickel, Class B, DIN 43760, No relay, Override switch, No setpoint
Regular price $336.74 USDRegular priceSale price $336.74 USD -
Greystone CD2RMCV13RXXXX Room CO2 Sensor, 0-2,000 ppm, Viewable LCD, 1000 Ohm Nickel, Class B, DIN 43760, Adjustable relay, No override, No setpoint
Regular price $347.01 USDRegular priceSale price $347.01 USD -
Greystone CD2RMCV12XXXXX Room CO2 Sensor, 0-2,000 ppm, Viewable LCD, 1000 Ohm Platinum, IEC 751, 385 Alpha, thin film, No relay, No override, No setpoint
Regular price $331.68 USDRegular priceSale price $331.68 USD -
Greystone CD2RMCV12XXP00 Room CO2 Sensor, 0-2,000 ppm, Viewable LCD, 1000 Ohm Platinum, IEC 751, 385 Alpha, thin film, No relay, No override, 0 - 10,000 ohms
Regular price $336.74 USDRegular priceSale price $336.74 USD -
Greystone CD2RMCV12XSXXX Room CO2 Sensor, 0-2,000 ppm, Viewable LCD, 1000 Ohm Platinum, IEC 751, 385 Alpha, thin film, No relay, Override switch, No setpoint
Regular price $336.74 USDRegular priceSale price $336.74 USD