+27 (0)11 568 0236 sking@acontrols.co.za


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.

CP Series – Condensation Prevention Sensor

HSOS Series – Outside Humidity Transmitter

HRC Series – Room Humidity Transmitter

Humidity & Dewpoint Product Series

HSDT Series – Duct Humidity Transmitter