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. Greystone has 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. The company designs and manufactures a wide range of products for sensing, measurement and transmittal of data related to temperature, humidity, pressure, current, air quality, and hazardous gases.
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