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Products > Field DevicesSensors & Switches > Humidity > Humidity / Temperature


Greystone Energy Systems Inc. is internationally recognized as one of the largest ISO registered manufacturers of HVAC sensors and transducers for Building Automation Management Systems. We have conscientiously established a worldwide reputation as an industry leader by maintaining leading-edge design technology, prompt technical support, and a commitment to on-time deliveries.

HTDT Series – Duct Humidity/Temperature Transmitter

HTOS Series – Outside Humidity/Temperature Transmitter

CR3 Series – Cleanroom Monitor

SPC Series – Room Humidity/Temperature Transmitter w/ Setpoint Control

HTRC Series – Room Humidity/Temperature Transmitter

NTRC Series – Temp/Humidity Sensor w/ BACnet and Modbus

NTD Series – Duct Humidity/Temp Sensor w/ BACnet® or Modbus

NTO Series – Outside Humidity/Temp Sensor w/ BACnet® or Modbus