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.
CDD3 Series (Co2)
CMD Series (Co)
Reliability and Innovation in the Areas of Pressure and Temperature We can supply you with a variety of products – with the focus on pressure switches, pressure transmitters, and thermostats – to achieve greater reliability and innovation.
C7110 Room Co2 Sensors
Veris Industries, Located in Portland Oregon, is a market focused, customer service oriented, leading supplier of energy and environmental sensors and control peripherals for Commercial HVAC and Energy Management applications.