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 RH100S05I20GTP 5% Room stainless plate humidity c/w 24 Vac/dc supply & 4-20 mA, 2.252 K ohm therrmistor & Tamperproof Screws
Regular price $155.02 USDRegular priceSale price $155.02 USD -
Greystone RH100S05I20G 5% Room stainless plate humidity c/w 24 Vac/dc supply & 4-20 mA, 2.252 K ohm therrmistor
Regular price $148.23 USDRegular priceSale price $148.23 USD -
Greystone RH100S05I20FTP 5% Room stainless plate humidity c/w 24 Vac/dc supply & 4-20 mA Output, 1801 ohm thermistor & Tamperproof Screws
Regular price $150.49 USDRegular priceSale price $150.49 USD -
Greystone RH100S05I20F 5% Room stainless plate humidity c/w 24 Vac/dc supply & 4-20 mA Output, 1801 ohm thermistor
Regular price $143.74 USDRegular priceSale price $143.74 USD -
Greystone RH100S05I20ETP 5% Room stainless plate humidity c/w 24 Vac/dc supply & 4-20 mA Output, 3000 ohm thermistor & Tamperproof Screws
Regular price $150.49 USDRegular priceSale price $150.49 USD -
Greystone RH100S05I20E 5% Room stainless plate humidity c/w 24 Vac/dc supply & 4-20 mA Output, 3000 ohm thermistor
Regular price $143.74 USDRegular priceSale price $143.74 USD -
Greystone RH100S05I20DTP 5% Room stainless plate humidity c/w 24 Vac/dc supply & 4-20 mA output, 10,000 ohm type 3 thermistor & Tamperproof Screws
Regular price $150.49 USDRegular priceSale price $150.49 USD -
Greystone RH100S05I20D 5% Room stainless plate humidity c/w 24 Vac/dc supply & 4-20 mA output, 10,000 ohm type 3 thermistor
Regular price $143.74 USDRegular priceSale price $143.74 USD -
Greystone RH100S05I20CTP 5% Room stainless plate humidity c/w 24 Vac/dc supply & 4-20 mA output, 1000 ohm Platinum RTD & Tamperoof Screws
Regular price $155.02 USDRegular priceSale price $155.02 USD -
Greystone RH100S05I20C 5% Room stainless plate humidity c/w 24 Vac/dc supply & 4-20 mA output, 1000 ohm Platinum RTD.
Regular price $148.23 USDRegular priceSale price $148.23 USD -
Greystone RH100S05I20BTP 5% Room stainless plate humidity c/w 24 Vac/dc supply & 4-20 mA output, 10K Ohm Thermistor, Type 3 w/ 11K Shunt & Tamperoof Screws
Regular price $155.02 USDRegular priceSale price $155.02 USD -
Greystone RH100S05I20B 5% Room stainless plate humidity c/w 24 Vac/dc supply & 4-20 mA output, 10K Ohm Thermistor, Type 3 w/ 11K Shunt
Regular price $148.23 USDRegular priceSale price $148.23 USD -
Greystone RH100S05I20 5% Room stainless plate humidity c/w 24 Vac/dc supply & 4-20 mA output.
Regular price $134.87 USDRegular priceSale price $134.87 USD -
Greystone RH110B05C1A2 5% designer humidity & temp transmitter, 24 Vdc supply, 4-20mA output and 0-50C(32-122F) temperature range.
Regular price $182.93 USDRegular priceSale price $182.93 USD -
Greystone RH110B05C1A1 5% designer humidity & temp transmitter, 24 Vdc supply, 4-20mA output and 0-35C(32-95F) temperature range.
Regular price $182.93 USDRegular priceSale price $182.93 USD -
Greystone RH110B03C1A2 3% designer humidity & temp transmitter, 24 Vdc supply, 4-20mA output and 0-50C(32-122F) temperature range.
Regular price $235.23 USDRegular priceSale price $235.23 USD -
Greystone RH110B03C1A1 3% designer humidity & temp transmitter, 24 Vdc supply, 4-20mA output and 0-35C(32-95F) temperature range.
Regular price $235.23 USDRegular priceSale price $235.23 USD -
Greystone RH110B02C1A2 2% designer humidity & temp transmitter, 24 Vdc supply, 4-20mA output and 0-50C(32-122F) temperature range.
Regular price $261.30 USDRegular priceSale price $261.30 USD -
Greystone RH110B02C1A1 2% designer humidity & temp transmitter, 24 Vdc supply, 4-20mA output and 0-35C(32-95F) temperature range.
Regular price $261.30 USDRegular priceSale price $261.30 USD -
Greystone RPC2-SP Room Pressure Monitor, +/- 0.25" wc, +/-0.125"wc, +/-30 Pa, +/-60 Pa Ranges (selectable), 24 Vac/dc supply, 4-20mA, 0-10Vdc and 0-5Vdc outputs, with stainless plate pick-up port.
Regular price $736.92 USDRegular priceSale price $736.92 USD -
Greystone RPC2-BAC-SP Room Pressure Monitor, +/- 0.25" wc, +/-0.125"wc, +/-30 Pa, +/-60 Pa Ranges (selectable), 24 Vac/dc supply, 4-20mA, 0-10Vdc and 0-5Vdc outputs, with stainless plate pick-up port and BACnet communications.
Regular price $775.22 USDRegular priceSale price $775.22 USD -
Greystone RPC2-BAC-AC Room Pressure Monitor, +/- 0.25" wc, +/-0.125"wc, +/-30 Pa, +/-60 Pa Ranges (selectable), 24 Vac/dc supply, 4-20mA, 0-10Vdc and 0-5Vdc outputs, with continental pick-up port and BACnet communications.
Regular price $775.22 USDRegular priceSale price $775.22 USD -
Greystone RPC2-AC Room Pressure Monitor, +/- 0.25" wc, +/-0.125"wc, +/-30 Pa, +/-60 Pa Ranges (selectable), 24 Vac/dc supply, 4-20mA, 0-10Vdc and 0-5Vdc outputs, with continental pick-up port.
Regular price $736.92 USDRegular priceSale price $736.92 USD -
Greystone RPC1-SP Room Pressure Monitor, +/- 1.0" wc, +/-0.5"wc, +/-125 Pa, +/-250 Pa Ranges (selectable), 24 Vac/dc supply, 4-20mA, 0-10Vdc and 0-5Vdc outputs, with stainless plate pick-up port.
Regular price $736.92 USDRegular priceSale price $736.92 USD -
Greystone RPC1-BAC-SP Room Pressure Monitor, +/- 1.0" wc, +/-0.5"wc, +/-125 Pa, +/-250 Pa Ranges (selectable), 24 Vac/dc supply, 4-20mA, 0-10Vdc and 0-5Vdc outputs, with stainless plate pick-up port and BACnet communications.
Regular price $775.22 USDRegular priceSale price $775.22 USD -
Greystone RPC1-BAC-AC Room Pressure Monitor, +/- 1.0" wc, +/-0.5"wc, +/-125 Pa, +/-250 Pa Ranges (selectable), 24 Vac/dc supply, 4-20mA, 0-10Vdc and 0-5Vdc outputs, with continental pick-up port and BACnet communications.
Regular price $775.22 USDRegular priceSale price $775.22 USD -
Greystone RPC1-AC Room Pressure Monitor, +/- 1.0" wc, +/-0.5"wc, +/-125 Pa, +/-250 Pa Ranges (selectable), 24 Vac/dc supply, 4-20mA, 0-10Vdc and 0-5Vdc outputs, with continental pick-up port.
Regular price $736.92 USDRegular priceSale price $736.92 USD -
Greystone RPYA002A24L 10 amp general purpose relay DPDT 24 Vac c/w LED
Regular price $24.04 USDRegular priceSale price $24.04 USD -
Greystone RPYA002A120L 10 amp general purpose relay DPDT 120 Vac c/w LED
Regular price $24.04 USDRegular priceSale price $24.04 USD -
Greystone RPYA00224L 10 amp general purpose relay DPDT 24 Vdc c/w LED
Regular price $24.04 USDRegular priceSale price $24.04 USD -
Greystone RPYA00212L 10 amp general purpose relay DPDT 12 Vdc c/w LED
Regular price $24.04 USDRegular priceSale price $24.04 USD -
Greystone SC-GNG-200 AC Current Switch, Split core 30 Vac/dc switch, MOSFET, 2 amp trip, Go - No - Go
Regular price $63.59 USDRegular priceSale price $63.59 USD -
Greystone SC-675-R2 AC Current Sensor, Split core sensor, 4 - 20 mA, (True RMS) 0 - 50 / 100 / 150 amp ranges, selectable
Regular price $113.92 USDRegular priceSale price $113.92 USD -
Greystone SC-675-R1 AC Current Sensor, Split core sensor, 4 - 20 mA, (True RMS) 0 - 10 / 20 / 50 amp ranges, selectable
Regular price $113.92 USDRegular priceSale price $113.92 USD -
Greystone SC-675-5 AC Current Sensor, Split core sensor, 4 - 20 mA, (True RMS) 0 - 5 amp range
Regular price $113.92 USDRegular priceSale price $113.92 USD -
Greystone SC-675-200 AC Current Sensor, Split core sensor, 4 - 20 mA, (True RMS) 0 - 200 amp range
Regular price $113.92 USDRegular priceSale price $113.92 USD -
Greystone SC-675-2 AC Current Sensor, Split core sensor, 4 - 20 mA, (True RMS) 0 - 2 amp range
Regular price $113.92 USDRegular priceSale price $113.92 USD -
Greystone SC-652-R2 AC Current Sensor, Split core sensor, 4 - 20 mA, (Average) 0 - 50 / 100 / 150 amp ranges, selectable
Regular price $82.15 USDRegular priceSale price $82.15 USD -
Greystone SC-652-R1 AC Current Sensor, Split core sensor, 4 - 20 mA, (Average) 0 - 20 / 40 / 60 amp ranges, selectable
Regular price $82.15 USDRegular priceSale price $82.15 USD -
Greystone SC-652-200 AC Current Sensor, Split core sensor, 4 - 20 mA, (Average) 0 - 200 amp range
Regular price $82.15 USDRegular priceSale price $82.15 USD -
Greystone SC-651-200 AC Current Sensor, Split core sensor, 0 - 10 Vdc, 0 - 200 amp range
Regular price $79.49 USDRegular priceSale price $79.49 USD -
Greystone SC-650-R2 AC Current Sensor, Split core sensor, 0 - 5 Vdc, 0 - 50 / 100 / 150 amp ranges, selectable
Regular price $79.49 USDRegular priceSale price $79.49 USD -
Greystone SC-650-R1 AC Current Sensor, Split core sensor, 0 - 5 Vdc, 0 - 10 / 20 / 50 amp ranges. selectable
Regular price $79.49 USDRegular priceSale price $79.49 USD -
Greystone SC-650-200 AC Current Sensor, Split core sensor, 0 - 5 Vdc, 0 - 200 amp range
Regular price $79.49 USDRegular priceSale price $79.49 USD -
Greystone SC-610-200 AC Current Switch, Split core 30 Vac/dc switch, MOSFET, 2 - 200 amps trip, power and status LED's
Regular price $87.42 USDRegular priceSale price $87.42 USD -
Greystone SPC06V05S 5% 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 $214.29 USDRegular priceSale price $214.29 USD -
Greystone SPC06V05 5% Humidity/temp transmitter c/w setpoint control, Microprocessor based 0-10Vdc outputs for both Room humidity / temp and humidity / temp setpoint control
Regular price $209.04 USDRegular priceSale price $209.04 USD -
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 USDRegular priceSale price $240.43 USD -
Greystone SPC06V03 3% Humidity/temp transmitter c/w setpoint control, Microprocessor based 0-10Vdc outputs for both Room humidity / temp and humidity / temp setpoint control
Regular price $235.23 USDRegular priceSale price $235.23 USD -
Greystone SPC06V02S 2% 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 $279.65 USDRegular priceSale price $279.65 USD