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.
AQDT Series – Air Quality Transmitter
PMDT Series – Duct Particulate Matter Sensor
PMRMC Series – Particulate Matter Sensor
AIR4 Series – Air Quality Monitor
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.
CDE & CWE Series - Standard Duct and Wall CO2 Sensors
Founded in 1991 Evikon MCI Ltd develops, manufactures and markets sensor-based electronic measurement instruments for industrial and building automation applications
Evikon E2250 Air Quality Monitor
Smartemp are an Australian company who manufacturer Heating, Ventilation and Air Conditioning Controls (HVAC controllers) for various applications.