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    • Home
    • Catalog
    • Contact
    • Categories
      • Temperature Sensors
        • Thermostats
        • Duct / Duct Averaging
        • Strap On / Surface Mount
        • Immersion
        • Outside Air
        • Room
      • Pressure Devices
        • Industrial
        • Differential
        • Refrigeration
        • Pressure Controls
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        • Duct Humidity
        • Room Humidity
        • Humidistats
      • Gas Detection
        • Sensors
        • Controllers
        • Refrigerant Detection
        • Explosion-Proof
        • Accessories
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        • IAQ (Indoor Air Quality)
        • Combo RH and Temp Sensors
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        • Current Relays
        • Current Transformers
        • Current Transducers
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        • Zone Valves
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        • Wireless Receivers
        • Wireless Transmitters
        • Wireless Accessories
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        • Air
        • Liquid
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        • Leak Detection
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        • Condensation
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    • Gray electronic device with 'GREYSTONE' branding on a white background

      Greystone CMD5B1000 Wall/Surface-Mount Carbon Monoxide Detector, 0-300 ppm range, 4-20 mA output

      Greystone CMD5B1000 Wall/Surface-Mount Carbon Monoxide Detector, 0-300 ppm range, 4-20 mA output

      Regular price $190.80 USD
      Regular price Sale price $190.80 USD
    • White wall sensor with 'Greystone' branding on a gradient background

      Greystone RH100B03D 3% Room designer humidity c/w 24 Vac/dc supply, 10,000 ohm type 3 thermistor & jumper selectable outputs.

      Greystone RH100B03D 3% Room designer humidity c/w 24 Vac/dc supply, 10,000 ohm type 3 thermistor & jumper selectable outputs.

      Regular price $157.18 USD
      Regular price Sale price $157.18 USD
    • Digital thermostat with Greystone branding on a white background

      Greystone TSPC12PEFS Microprocessor based Temperature Sensor with LCD display

      Greystone TSPC12PEFS Microprocessor based Temperature Sensor with LCD display

      Regular price $165.55 USD
      Regular price Sale price $165.55 USD
    • Digital thermostat with Greystone branding on a white background

      Greystone TSPC7PFS Room Temperature Sensor, LCD, 10K Type 3 Thermistor, Setpoint, Fan Switch, Override

      Greystone TSPC7PFS Room Temperature Sensor, LCD, 10K Type 3 Thermistor, Setpoint, Fan Switch, Override

      Regular price $157.99 USD
      Regular price Sale price $157.99 USD
    • White wall sensor with 'Greystone' branding on a gradient background

      Greystone RH100B02G 2% Room designer humidity c/w 24 Vac/dc supply, 2.252 K ohm therrmistor & jumper selectable outputs.

      Greystone RH100B02G 2% Room designer humidity c/w 24 Vac/dc supply, 2.252 K ohm therrmistor & jumper selectable outputs.

      Regular price $195.23 USD
      Regular price Sale price $195.23 USD
    • Digital thermostat with a white background

      Greystone SPC01I02 2% Humidity Transmitter c/w setpoint control, Microprocessor based 4-20mA outputs for both Room humidity and setpoint, .

      Greystone SPC01I02 2% Humidity Transmitter c/w setpoint control, Microprocessor based 4-20mA outputs for both Room humidity and setpoint, .

      Regular price $209.04 USD
      Regular price Sale price $209.04 USD
    • Digital thermostat with a white background

      Greystone SPC05I05 5% Humidity/temp transmitter c/w setpoint control, Microprocessor based 4-20mA outputs for both Room humidity / temp and humidity setpoint control

      Greystone SPC05I05 5% Humidity/temp transmitter c/w setpoint control, Microprocessor based 4-20mA outputs for both Room humidity / temp and humidity setpoint control

      Regular price $195.99 USD
      Regular price Sale price $195.99 USD
    • White digital thermostat with display on a gray background

      Greystone CDD3A100RHS Room Carbon Dioxide Sensor w/ BACnet Communications, Concealed LCD, CO2, Humidity & Temperature, Exposed push button momentary switch - N.O.

      Greystone CDD3A100RHS Room Carbon Dioxide Sensor w/ BACnet Communications, Concealed LCD, CO2, Humidity & Temperature, Exposed push button momentary switch - N.O.

      Regular price $579.23 USD
      Regular price Sale price $579.23 USD
    • Digital thermostat with Greystone branding on a white background

      Greystone TSPC20P6EFS Microprocessor based Temperature Sensor w/LCD display

      Greystone TSPC20P6EFS Microprocessor based Temperature Sensor w/LCD display

      Regular price $155.05 USD
      Regular price Sale price $155.05 USD
    • Digital thermostat with a white background

      Greystone SPC01I03 3% Humidity Transmitter c/w setpoint control, Microprocessor based 4-20mA outputs for both Room humidity and setpoint

      Greystone SPC01I03 3% Humidity Transmitter c/w setpoint control, Microprocessor based 4-20mA outputs for both Room humidity and setpoint

      Regular price $169.91 USD
      Regular price Sale price $169.91 USD
    • Gray electronic device with 'GREYSTONE' branding on a white background

      Greystone CMD5B1000-010 Wall/Surface-Mount Carbon Monoxide Detector, 0-300 ppm range, 0-10 Vdc output

      Greystone CMD5B1000-010 Wall/Surface-Mount Carbon Monoxide Detector, 0-300 ppm range, 0-10 Vdc output

      Regular price $188.04 USD
      Regular price Sale price $188.04 USD
    • White wall sensor with 'Greystone' branding on a gradient background

      Greystone RH100B02J 2% Room designer humidity c/w 24 Vac/dc supply, 10,000 ohm type 2 thermistor & jumper selectable outputs.

      Greystone RH100B02J 2% Room designer humidity c/w 24 Vac/dc supply, 10,000 ohm type 2 thermistor & jumper selectable outputs.

      Regular price $190.83 USD
      Regular price Sale price $190.83 USD
    • Digital thermostat with a white background

      Greystone SPC05I03 3% Humidity/temp transmitter c/w setpoint control, Microprocessor based 4-20mA outputs for both Room humidity / temp and humidity setpoint control

      Greystone SPC05I03 3% Humidity/temp transmitter c/w setpoint control, Microprocessor based 4-20mA outputs for both Room humidity / temp and humidity setpoint control

      Regular price $222.17 USD
      Regular price Sale price $222.17 USD
    • Digital thermostat with a white background

      Greystone SPC04I02S 2% Humidity/temp transmitter c/w setpoint control, Microprocessor based 4-20mA outputs for both Room humidity / temp and temp setpoint control c/w momentary push button (override)

      Greystone SPC04I02S 2% Humidity/temp transmitter c/w setpoint control, Microprocessor based 4-20mA outputs for both Room humidity / temp and temp setpoint control c/w momentary push button (override)

      Regular price $266.51 USD
      Regular price Sale price $266.51 USD
    • Digital thermostat with Greystone branding on a white background

      Greystone TSPC5PFS Room Temperature Sensor, LCD, 1,801 ohm Thermistor, Setpoint, Fan Switch, Override

      Greystone TSPC5PFS Room Temperature Sensor, LCD, 1,801 ohm Thermistor, Setpoint, Fan Switch, Override

      Regular price $158.09 USD
      Regular price Sale price $158.09 USD
    • Digital thermostat with Greystone branding on a white background

      Greystone TSPC13PFS Room Temperature Sensor, LCD, 1,000 ohm Nickel RTD, Setpoint, Fan Switch, Override

      Greystone TSPC13PFS Room Temperature Sensor, LCD, 1,000 ohm Nickel RTD, Setpoint, Fan Switch, Override

      Regular price $164.70 USD
      Regular price Sale price $164.70 USD
    • White wall sensor with 'Greystone' branding on a gradient background

      Greystone RH100B03E 3% Room designer humidity c/w 24 Vac/dc supply, 3000 ohm thermistor & jumper selectable outputs.

      Greystone RH100B03E 3% Room designer humidity c/w 24 Vac/dc supply, 3000 ohm thermistor & jumper selectable outputs.

      Regular price $157.18 USD
      Regular price Sale price $157.18 USD
    • Digital thermostat with a white background

      Greystone SPC04V02 2% Humidity/temp transmitter c/w setpoint control, Microprocessor based 0-10Vdc outputs for both Room humidity / temp and temp setpoint control

      Greystone SPC04V02 2% Humidity/temp transmitter c/w setpoint control, Microprocessor based 0-10Vdc outputs for both Room humidity / temp and temp setpoint control

      Regular price $261.30 USD
      Regular price Sale price $261.30 USD
    • Digital thermostat with a white background

      Greystone SPC05I05S 5% Humidity/temp transmitter c/w setpoint control, Microprocessor based 4-20mA outputs for both Room humidity / temp and humidity setpoint control c/w momentary push button (override)

      Greystone SPC05I05S 5% Humidity/temp transmitter c/w setpoint control, Microprocessor based 4-20mA outputs for both Room humidity / temp and humidity setpoint control c/w momentary push button (override)

      Regular price $201.23 USD
      Regular price Sale price $201.23 USD
    • Digital thermostat with Greystone branding on a white background

      Greystone TSPC5PEF Room Temperature Sensor, LCD, 1,801 ohm Thermistor, Setpoint, External Jack, Fan Switch

      Greystone TSPC5PEF Room Temperature Sensor, LCD, 1,801 ohm Thermistor, Setpoint, External Jack, Fan Switch

      Regular price $155.57 USD
      Regular price Sale price $155.57 USD
    • Digital thermostat with a white background

      Greystone SPC05V02 2% Humidity/temp transmitter c/w setpoint control, Microprocessor based 0-10Vdc outputs for both Room humidity / temp and humidity setpoint control

      Greystone SPC05V02 2% Humidity/temp transmitter c/w setpoint control, Microprocessor based 0-10Vdc outputs for both Room humidity / temp and humidity setpoint control

      Regular price $261.30 USD
      Regular price Sale price $261.30 USD
    • Digital thermostat with Greystone branding on a white background

      Greystone TSPC20P6F Room Temperature Sensor, LCD, 20,000 ohm Thermistor, P6 Setpoint, Fan Switch

      Greystone TSPC20P6F Room Temperature Sensor, LCD, 20,000 ohm Thermistor, P6 Setpoint, Fan Switch

      Regular price $153.05 USD
      Regular price Sale price $153.05 USD
    • White digital thermostat with display on a gray background

      Greystone CDD3A101T Room Carbon Dioxide Sensor w/ BACnet Communications, Viewable LCD, CO2 & Tempreature

      Greystone CDD3A101T Room Carbon Dioxide Sensor w/ BACnet Communications, Viewable LCD, CO2 & Tempreature

      Regular price $433.83 USD
      Regular price Sale price $433.83 USD
    • Digital thermostat with a white background

      Greystone SPC06V03S 3% Humidity/temp transmitter c/w setpoint control, Microprocessor based 0-10Vdc outputs for both Room humidity / temp and humidity / temp setpoint control c/w momentary push button (override)

      Greystone SPC06V03S 3% Humidity/temp transmitter c/w setpoint control, Microprocessor based 0-10Vdc outputs for both Room humidity / temp and humidity / temp setpoint control c/w momentary push button (override)

      Regular price $240.43 USD
      Regular price Sale price $240.43 USD
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