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Products > Field Devices > Sensors & Switches > Temperature > BACnet / Modbus


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.

TNAP Series – All Purpose Network Temperature Sensor

TNDC Series – Flexible Copper Network Duct Average Sensor

TNDF Series – Flex Duct Average Network Temperature Sensor

TNDR Series – Rigid Duct Average Network Temperature Sensor

TNRP Series – Remote Strap-on Network Temperature Sensor

TNSO Series – Strap-on Network Temperature Sensor

TNOS Series – Outside Network Temperature Sensor

TNFL Series – Flying Lead Network Temperature Sensor

NTRC Series – Temp/Humidity Sensor w/ BACnet and Modbus

TNGL Series – Glass Network Temperature Sensor

Temperature Product Series




ANNICOM has been established as a design and build company for the Industrial Controls, HVAC, and Building Automation Industry for more than 25 years. Alongside its own range of high quality products under the “”Axio”” brand name it also designs and manufactures controls for many of the industry giants on an OEM basis, including such companies as Honeywell, Toshiba Carrier and Clivet.

Full Product Catalogue