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Products > Field Devices > Electrical > Current Switches & Transducers


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.

CS Mini Switch Series – AC Mini Current Switch

CSR Series – Add-on Command relay

CS Mini Sensor Series – AC Mini Current Sensors

CS Switch Series – AC Solid Core Current Switches

CS-425-HC Series – High Output AC Current Switch w/ Time Delay

CS Sensor Series – AC Solid Core Current Sensor

SC Switch Series – AC Split Core Current Switch

CS625 – High Output AC Current Sensor

SC Sensor Series – AC Split Core Current Sensor


MAMAC Systems is a leading global manufacturer of current switches transducers, sensors, control peripherals and web browser based IP Appliances. MAMAC products are used for HVAC and environmental controls, remote monitoring alarming, energy metering, and industrial automation.

CU-CT – Current Switches & Transducers

Sensors & Transducers