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 CO2 Transmitter, 0-2000 ppm, 10,000 ohm NTC Thermistor
Regular price $204.80 USDRegular priceSale price $204.80 USD -
Greystone CERMC24 Room CO2 Transmitter, 0-2000 ppm, 10,000 ohm Type 2 NTC Thermistor
Regular price $200.51 USDRegular priceSale price $200.51 USD -
Greystone CERMC20 Room CO2 Transmitter, 0-2000 ppm, 20,000 ohm NTC Thermistor
Regular price $200.51 USDRegular priceSale price $200.51 USD -
Greystone CERMC14 Room CO2 Transmitter, 0-2000 ppm, 10,000 ohm Type 3 NTC with 11K Shunt
Regular price $204.80 USDRegular priceSale price $204.80 USD -
Greystone CERMC13 Room CO2 Transmitter, 0-2000 ppm, 1,000 ohm Nickel RTD
Regular price $204.80 USDRegular priceSale price $204.80 USD -
Greystone CERMC12 Room CO2 Transmitter, 0-2000 ppm, 1,000 ohm Platinum RTD
Regular price $204.80 USDRegular priceSale price $204.80 USD -
Greystone CERMC08 Room CO2 Transmitter, 0-2000 ppm, 2,252 ohm NTC Thermistor
Regular price $204.80 USDRegular priceSale price $204.80 USD -
Greystone CERMC07 Room CO2 Transmitter, 0-2000 ppm, 10,000 ohm Type 3 NTC Thermistor
Regular price $200.51 USDRegular priceSale price $200.51 USD -
Greystone CERMC06 Room CO2 Transmitter, 0-2000 ppm, 3,000 ohm NTC Thermistor
Regular price $200.51 USDRegular priceSale price $200.51 USD -
Greystone CERMC05 Room CO2 Transmitter, 0-2000 ppm, 1,801 ohm NTC Thermistor
Regular price $200.51 USDRegular priceSale price $200.51 USD -
Greystone CERMC02 Room CO2 Transmitter, 0-2000 ppm, 100 ohm Platinum RTD
Regular price $204.80 USDRegular priceSale price $204.80 USD -
Greystone CERMC00 Room CO2 Transmitter, 0-2000 ppm, No Temperature Sensor
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