Collection: By Manufacturer: Greystone Energy
Greystone Energy Systems, a Bemsiq Group company with 40+ years of experience, is a leading manufacturer of HVAC sensors. Following its 2021 acquisition, it expanded in 2024 by adding QEL and Armstrong Monitoring to strengthen its gas detection portfolio for building automation. Shop all of the items that we offer from Greystone here. We will be adding more to our catalog in 2026!
-
Greystone HTRC3LVS Room Humidity/ Temperature Transmitter, 3%, Viewable LCD, 0-5 Vdc or 0-10 Vdc output - Jumper selectable, Override switch (Includes OCC input)
Regular price $267.52 USDRegular priceSale price $267.52 USD -
Greystone HTRC3LV Room Humidity/ Temperature Transmitter, 3%, Viewable LCD, 0-5 Vdc or 0-10 Vdc output - Jumper selectable
Regular price $262.20 USDRegular priceSale price $262.20 USD -
Greystone HTRC3LIS Room Humidity/ Temperature Transmitter, 3%, Viewable LCD, 4-20 mA output, Override switch (Includes OCC input)
Regular price $267.52 USDRegular priceSale price $267.52 USD -
Greystone HTRC3LI Room Humidity/ Temperature Transmitter, 3%, Viewable LCD, 4-20 mA output
Regular price $262.20 USDRegular priceSale price $262.20 USD -
Greystone HTRC2NVS Room Humidity/ Temperature Transmitter, 2%, Concealed LCD, 0-5 Vdc or 0-10 Vdc output - Jumper selectable, Override switch (Includes OCC input)
Regular price $267.52 USDRegular priceSale price $267.52 USD -
Greystone HTRC2NV Room Humidity/ Temperature Transmitter, 2%, Concealed LCD, 0-5 Vdc or 0-10 Vdc output - Jumper selectable
Regular price $262.20 USDRegular priceSale price $262.20 USD -
Greystone HTRC2NIS Room Humidity/ Temperature Transmitter, 2%, Concealed LCD, 4-20 mA output, Override switch (Includes OCC input)
Regular price $267.52 USDRegular priceSale price $267.52 USD -
Greystone HTRC2NI Room Humidity/ Temperature Transmitter, 2%, Concealed LCD, 4-20 mA output
Regular price $262.20 USDRegular priceSale price $262.20 USD -
Greystone HTRC2LVS Room Humidity/ Temperature Transmitter, 2%, Viewable LCD, 0-5 Vdc or 0-10 Vdc output - Jumper selectable, Override switch (Includes OCC input)
Regular price $293.67 USDRegular priceSale price $293.67 USD -
Greystone HTRC2LV Room Humidity/ Temperature Transmitter, 2%, Viewable LCD, 0-5 Vdc or 0-10 Vdc output - Jumper selectable
Regular price $288.44 USDRegular priceSale price $288.44 USD -
Greystone HTRC2LIS Room Humidity/ Temperature Transmitter, 2%, Viewable LCD, 4-20 mA output, Override switch (Includes OCC input)
Regular price $293.67 USDRegular priceSale price $293.67 USD -
Greystone HTRC2LI Room Humidity/ Temperature Transmitter, 2%, Viewable LCD, 4-20 mA output
Regular price $288.44 USDRegular priceSale price $288.44 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 -
Greystone CD2RMCV12RXXXX Room CO2 Sensor, 0-2,000 ppm, Viewable LCD, 1000 Ohm Platinum, IEC 751, 385 Alpha, thin film, Adjustable relay, No override, No setpoint
Regular price $347.01 USDRegular priceSale price $347.01 USD -
Greystone CD2RMCV08XXXXX Room CO2 Sensor, 0-2,000 ppm, Viewable LCD, 2.252K Ohm, NTC Thermistor, ±0.2 C, No relay, No override, No setpoint
Regular price $331.68 USDRegular priceSale price $331.68 USD -
Greystone CD2RMCV08XXP00 Room CO2 Sensor, 0-2,000 ppm, Viewable LCD, 2.252K Ohm, NTC Thermistor, ±0.2 C, No relay, No override, 0 - 10,000 ohms
Regular price $336.74 USDRegular priceSale price $336.74 USD -
Greystone CD2RMCV08XSXXX Room CO2 Sensor, 0-2,000 ppm, Viewable LCD, 2.252K Ohm, NTC Thermistor, ±0.2 C, No relay, Override switch, No setpoint
Regular price $336.74 USDRegular priceSale price $336.74 USD -
Greystone CD2RMCV08RXXXX Room CO2 Sensor, 0-2,000 ppm, Viewable LCD, 2.252K Ohm, NTC Thermistor, ±0.2 C, Adjustable relay, No override, No setpoint
Regular price $347.01 USDRegular priceSale price $347.01 USD -
Greystone CD2RMCV07XXXXX Room CO2 Sensor, 0-2,000 ppm, Viewable LCD, 10,000 Ohm, type 3, NTC Thermistor, ±0.2 C, No relay, No override, No setpoint
Regular price $327.38 USDRegular priceSale price $327.38 USD -
Greystone CD2RMCV07XXP00 Room CO2 Sensor, 0-2,000 ppm, Viewable LCD, 10,000 Ohm, type 3, NTC Thermistor, ±0.2 C, No relay, No override, 0 - 10,000 ohms
Regular price $332.51 USDRegular priceSale price $332.51 USD -
Greystone CD2RMCV07XSXXX Room CO2 Sensor, 0-2,000 ppm, Viewable LCD, 10,000 Ohm, type 3, NTC Thermistor, ±0.2 C, No relay, Override switch, No setpoint
Regular price $332.51 USDRegular priceSale price $332.51 USD -
Greystone CD2RMCV07RXXXX Room CO2 Sensor, 0-2,000 ppm, Viewable LCD, 10,000 Ohm, type 3, NTC Thermistor, ±0.2 C, Adjustable relay, No override, No setpoint
Regular price $342.72 USDRegular priceSale price $342.72 USD -
Greystone CD2RMCV06XXXXX Room CO2 Sensor, 0-2,000 ppm, Viewable LCD, 3000 Ohm, NTC Thermistor, ±0.2 C, No relay, No override, No setpoint
Regular price $327.38 USDRegular priceSale price $327.38 USD -
Greystone CD2RMCV06XXP00 Room CO2 Sensor, 0-2,000 ppm, Viewable LCD, 3000 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 CD2RMCV06XSXXX Room CO2 Sensor, 0-2,000 ppm, Viewable LCD, 3000 Ohm, NTC Thermistor, ±0.2 C, No relay, Override switch, No setpoint
Regular price $332.51 USDRegular priceSale price $332.51 USD -
Greystone CD2RMCV06RXXXX Room CO2 Sensor, 0-2,000 ppm, Viewable LCD, 3000 Ohm, NTC Thermistor, ±0.2 C, Adjustable relay, No override, No setpoint
Regular price $342.72 USDRegular priceSale price $342.72 USD -
Greystone CD2RMCV05XXXXX Room CO2 Sensor, 0-2,000 ppm, Viewable LCD, 1801 Ohm, NTC Thermistor, ±0.2 C, No relay, No override, No setpoint
Regular price $327.38 USDRegular priceSale price $327.38 USD -
Greystone CD2RMCV05XXP00 Room CO2 Sensor, 0-2,000 ppm, Viewable LCD, 1801 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 CD2RMCV05XSXXX Room CO2 Sensor, 0-2,000 ppm, Viewable LCD, 1801 Ohm, NTC Thermistor, ±0.2 C, No relay, Override switch, No setpoint
Regular price $332.51 USDRegular priceSale price $332.51 USD -
Greystone CD2RMCV05RXXXX Room CO2 Sensor, 0-2,000 ppm, Viewable LCD, 1801 Ohm, NTC Thermistor, ±0.2 C, Adjustable relay, No override, No setpoint
Regular price $342.72 USDRegular priceSale price $342.72 USD