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!
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Greystone CD2RMCV02XXXXX Room CO2 Sensor, 0-2,000 ppm, Viewable LCD, 100 Ohm Plat. IEC 751, 385 Alpha, thin film, No relay, No override, No setpoint
Regular price $331.68 USDRegular priceSale price $331.68 USD -
Greystone CD2RMCV02XXP00 Room CO2 Sensor, 0-2,000 ppm, Viewable LCD, 100 Ohm Plat. 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 CD2RMCV02XSXXX Room CO2 Sensor, 0-2,000 ppm, Viewable LCD, 100 Ohm Plat. IEC 751, 385 Alpha, thin film, No relay, Override switch, No setpoint
Regular price $336.74 USDRegular priceSale price $336.74 USD -
Greystone CD2RMCV02RXXXX Room CO2 Sensor, 0-2,000 ppm, Viewable LCD, 100 Ohm Plat. IEC 751, 385 Alpha, thin film, Adjustable relay, No override, No setpoint
Regular price $347.01 USDRegular priceSale price $347.01 USD -
Greystone CD2RMCCXXXXXXX Room CO2 Sensor, 0-2,000 ppm, Concealed LCD, No temperature sensor, No relay, No override, No setpoint
Regular price $306.28 USDRegular priceSale price $306.28 USD -
Greystone CD2RMCCXXRXXXX Room CO2 Sensor, 0-2,000 ppm, Concealed LCD, No temperature sensor, Adjustable relay, No override, No setpoint
Regular price $321.63 USDRegular priceSale price $321.63 USD -
Greystone CD2RMCC24XXXXX Room CO2 Sensor, 0-2,000 ppm, Concealed LCD, 10,000 Ohm, type 2, NTC Thermistor, ±0.2 C, No relay, No override, No setpoint
Regular price $314.62 USDRegular priceSale price $314.62 USD -
Greystone CD2RMCC24XSXXX Room CO2 Sensor, 0-2,000 ppm, Concealed LCD, 10,000 Ohm, type 2, NTC Thermistor, ±0.2 C, No relay, Override switch, No setpoint
Regular price $319.76 USDRegular priceSale price $319.76 USD -
Greystone CD2RMCC24RXXXX Room CO2 Sensor, 0-2,000 ppm, Concealed LCD, 10,000 Ohm, type 2, NTC Thermistor, ±0.2 C, Adjustable relay, No override, No setpoint
Regular price $329.96 USDRegular priceSale price $329.96 USD -
Greystone CD2RMCC20XXXXX Room CO2 Sensor, 0-2,000 ppm, Concealed LCD, 20,000 Ohm, NTC Thermistor, ±0.2 C, No relay, No override, No setpoint
Regular price $314.62 USDRegular priceSale price $314.62 USD -
Greystone CD2RMCC20XSXXX Room CO2 Sensor, 0-2,000 ppm, Concealed LCD, 20,000 Ohm, NTC Thermistor, ±0.2 C, No relay, Override switch, No setpoint
Regular price $319.76 USDRegular priceSale price $319.76 USD -
Greystone CD2RMCC20RXXXX Room CO2 Sensor, 0-2,000 ppm, Concealed LCD, 20,000 Ohm, NTC Thermistor, ±0.2 C, Adjustable relay, No override, No setpoint
Regular price $329.96 USDRegular priceSale price $329.96 USD -
Greystone CD2RMCC14XXXXX Room CO2 Sensor, 0-2,000 ppm, Concealed LCD, 10,000 Ohm, type 3, NTC Thermistor, ±0.2 C c/w 11K shunt resistor, No relay, No override, No setpoint
Regular price $318.89 USDRegular priceSale price $318.89 USD -
Greystone CD2RMCC14XSXXX Room CO2 Sensor, 0-2,000 ppm, Concealed LCD, 10,000 Ohm, type 3, NTC Thermistor, ±0.2 C c/w 11K shunt resistor, No relay, Override switch, No setpoint
Regular price $324.06 USDRegular priceSale price $324.06 USD -
Greystone CD2RMCC14RXXXX Room CO2 Sensor, 0-2,000 ppm, Concealed LCD, 10,000 Ohm, type 3, NTC Thermistor, ±0.2 C c/w 11K shunt resistor, Adjustable relay, No override, No setpoint
Regular price $334.22 USDRegular priceSale price $334.22 USD -
Greystone CD2RMCC13XXXXX Room CO2 Sensor, 0-2,000 ppm, Concealed LCD, 1000 Ohm Nickel, Class B, DIN 43760, No relay, No override, No setpoint
Regular price $318.89 USDRegular priceSale price $318.89 USD -
Greystone CD2RMCC13XSXXX Room CO2 Sensor, 0-2,000 ppm, Concealed LCD, 1000 Ohm Nickel, Class B, DIN 43760, No relay, Override switch, No setpoint
Regular price $324.06 USDRegular priceSale price $324.06 USD -
Greystone CD2RMCC13RXXXX Room CO2 Sensor, 0-2,000 ppm, Concealed LCD, 1000 Ohm Nickel, Class B, DIN 43760, Adjustable relay, No override, No setpoint
Regular price $334.22 USDRegular priceSale price $334.22 USD -
Greystone CD2RMCC12XXXXX Room CO2 Sensor, 0-2,000 ppm, Concealed LCD, 1000 Ohm Platinum, IEC 751, 385 Alpha, thin film, No relay, No override, No setpoint
Regular price $318.89 USDRegular priceSale price $318.89 USD -
Greystone CD2RMCC12XSXXX Room CO2 Sensor, 0-2,000 ppm, Concealed LCD, 1000 Ohm Platinum, IEC 751, 385 Alpha, thin film, No relay, Override switch, No setpoint
Regular price $324.06 USDRegular priceSale price $324.06 USD -
Greystone CD2RMCC12RXXXX Room CO2 Sensor, 0-2,000 ppm, Concealed LCD, 1000 Ohm Platinum, IEC 751, 385 Alpha, thin film, Adjustable relay, No override, No setpoint
Regular price $334.22 USDRegular priceSale price $334.22 USD -
Greystone CD2RMCC08XXXXX Room CO2 Sensor, 0-2,000 ppm, Concealed LCD, 2.252K Ohm, NTC Thermistor, ±0.2 C, No relay, No override, No setpoint
Regular price $318.89 USDRegular priceSale price $318.89 USD -
Greystone CD2RMCC08XSXXX Room CO2 Sensor, 0-2,000 ppm, Concealed LCD, 2.252K Ohm, NTC Thermistor, ±0.2 C, No relay, Override switch, No setpoint
Regular price $324.06 USDRegular priceSale price $324.06 USD -
Greystone CD2RMCC08RXXXX Room CO2 Sensor, 0-2,000 ppm, Concealed LCD, 2.252K Ohm, NTC Thermistor, ±0.2 C, Adjustable relay, No override, No setpoint
Regular price $334.22 USDRegular priceSale price $334.22 USD -
Greystone CD2RMCC07XXXXX Room CO2 Sensor, 0-2,000 ppm, Concealed LCD, 10,000 Ohm, type 3, NTC Thermistor, ±0.2 C, No relay, No override, No setpoint
Regular price $314.62 USDRegular priceSale price $314.62 USD -
Greystone CD2RMCC07XSXXX Room CO2 Sensor, 0-2,000 ppm, Concealed LCD, 10,000 Ohm, type 3, NTC Thermistor, ±0.2 C, No relay, Override switch, No setpoint
Regular price $319.76 USDRegular priceSale price $319.76 USD -
Greystone CD2RMCC07RXXXX Room CO2 Sensor, 0-2,000 ppm, Concealed LCD, 10,000 Ohm, type 3, NTC Thermistor, ±0.2 C, Adjustable relay, No override, No setpoint
Regular price $329.96 USDRegular priceSale price $329.96 USD -
Greystone CD2RMCC06XXXXX Room CO2 Sensor, 0-2,000 ppm, Concealed LCD, 3000 Ohm, NTC Thermistor, ±0.2 C, No relay, No override, No setpoint
Regular price $314.62 USDRegular priceSale price $314.62 USD -
Greystone CD2RMCC06XSXXX Room CO2 Sensor, 0-2,000 ppm, Concealed LCD, 3000 Ohm, NTC Thermistor, ±0.2 C, No relay, Override switch, No setpoint
Regular price $319.76 USDRegular priceSale price $319.76 USD -
Greystone CD2RMCC06RXXXX Room CO2 Sensor, 0-2,000 ppm, Concealed LCD, 3000 Ohm, NTC Thermistor, ±0.2 C, Adjustable relay, No override, No setpoint
Regular price $329.96 USDRegular priceSale price $329.96 USD -
Greystone CD2RMCC05XXXXX Room CO2 Sensor, 0-2,000 ppm, Concealed LCD, 1801 Ohm, NTC Thermistor, ±0.2 C, No relay, No override, No setpoint
Regular price $314.62 USDRegular priceSale price $314.62 USD -
Greystone CD2RMCC05XSXXX Room CO2 Sensor, 0-2,000 ppm, Concealed LCD, 1801 Ohm, NTC Thermistor, ±0.2 C, No relay, Override switch, No setpoint
Regular price $319.76 USDRegular priceSale price $319.76 USD -
Greystone CD2RMCC05RXXXX Room CO2 Sensor, 0-2,000 ppm, Concealed LCD, 1801 Ohm, NTC Thermistor, ±0.2 C, Adjustable relay, No override, No setpoint
Regular price $329.96 USDRegular priceSale price $329.96 USD -
Greystone CD2RMCC02XXXXX Room CO2 Sensor, 0-2,000 ppm, Concealed LCD, 100 Ohm Plat. IEC 751, 385 Alpha, thin film, No relay, No override, No setpoint
Regular price $318.89 USDRegular priceSale price $318.89 USD -
Greystone CD2RMCC02XSXXX Room CO2 Sensor, 0-2,000 ppm, Concealed LCD, 100 Ohm Plat. IEC 751, 385 Alpha, thin film, No relay, Override switch, No setpoint
Regular price $324.06 USDRegular priceSale price $324.06 USD -
Greystone CD2RMCC02RXXXX Room CO2 Sensor, 0-2,000 ppm, Concealed LCD, 100 Ohm Plat. IEC 751, 385 Alpha, thin film, Adjustable relay, No override, No setpoint
Regular price $334.22 USDRegular priceSale price $334.22 USD -
Greystone CDD3B101TS Room Carbon Dioxide Sensor, w/ Modbus Communications, Viewable LCD, CO2 & Tempreature, Exposed push button momentary switch - N.O.
Regular price $438.93 USDRegular priceSale price $438.93 USD -
Greystone CDD3B101TRS Room Carbon Dioxide Sensor, w/ Modbus Communications, Viewable LCD, CO2 & Tempreature, Relay Output, Exposed push button momentary switch - N.O.
Regular price $454.27 USDRegular priceSale price $454.27 USD -
Greystone CDD3B101TR Room Carbon Dioxide Sensor, w/ Modbus Communications, Viewable LCD, CO2 & Tempreature, Relay Output
Regular price $449.14 USDRegular priceSale price $449.14 USD -
Greystone CDD3B101TPS Room Carbon Dioxide Sensor, w/ Modbus Communications, Viewable LCD, CO2 & Tempreature, Setpoint control , 2 button up/down, Exposed push button momentary switch - N.O.
Regular price $444.08 USDRegular priceSale price $444.08 USD -
Greystone CDD3B101TPR Room Carbon Dioxide Sensor, w/ Modbus Communications, Viewable LCD, CO2 & Tempreature, Setpoint control , 2 button up/down, Relay Output
Regular price $454.27 USDRegular priceSale price $454.27 USD -
Greystone CDD3B101TP Room Carbon Dioxide Sensor, w/ Modbus Communications, Viewable LCD, CO2 & Tempreature, Setpoint control , 2 button up/down
Regular price $438.93 USDRegular priceSale price $438.93 USD -
Greystone CDD3B101T Room Carbon Dioxide Sensor, w/ Modbus Communications, Viewable LCD, CO2 & Tempreature,
Regular price $433.83 USDRegular priceSale price $433.83 USD -
Greystone CDD3B101RHS Room Carbon Dioxide Sensor, w/ Modbus Communications, Viewable LCD, CO2, Humidity & Temperature, Exposed push button momentary switch - N.O.
Regular price $592.03 USDRegular priceSale price $592.03 USD -
Greystone CDD3B101RHRS Room Carbon Dioxide Sensor, w/ Modbus Communications, Viewable LCD, CO2, Humidity & Temperature, Relay Output, Exposed push button momentary switch - N.O.
Regular price $607.37 USDRegular priceSale price $607.37 USD -
Greystone CDD3B101RHR Room Carbon Dioxide Sensor, w/ Modbus Communications, Viewable LCD, CO2, Humidity & Temperature, Relay Output
Regular price $602.26 USDRegular priceSale price $602.26 USD -
Greystone CDD3B101RHPS Room Carbon Dioxide Sensor, w/ Modbus Communications, Viewable LCD, CO2, Humidity & Temperature, Setpoint control , 2 button up/down, Exposed push button momentary switch - N.O.
Regular price $597.12 USDRegular priceSale price $597.12 USD -
Greystone CDD3B101RHPR Room Carbon Dioxide Sensor, w/ Modbus Communications, Viewable LCD, CO2, Humidity & Temperature, Setpoint control , 2 button up/down, Relay Output
Regular price $607.37 USDRegular priceSale price $607.37 USD -
Greystone CDD3B101RHP Room Carbon Dioxide Sensor, w/ Modbus Communications, Viewable LCD, CO2, Humidity & Temperature, Setpoint control , 2 button up/down
Regular price $592.03 USDRegular priceSale price $592.03 USD -
Greystone CDD3B101RH Room Carbon Dioxide Sensor, w/ Modbus Communications, Viewable LCD, CO2, Humidity & Temperature
Regular price $586.96 USDRegular priceSale price $586.96 USD