Tongdy Control Technology Co., Ltd. founded in 1999 in Beijing, is a leading hi-tech company of design and manufacture digital thermostats and humidity controllers, as well as monitors and controllers of IAQ.

With more than 10-year design experience and 6- year export experience, we are famous in the professional design and service in various digital controllers of HVAC and IAQ.

Tongdy especially provide Modbus and BACnet commercial thermostats to BAS.

Now Tongdy's main product covers programmable and non-programmable digital thermostats for HVAC, humidity controllers, as well as covers the detectors/monitors/controllers of CO2/CO/Ozone in much applications. A product line of IAQ detector/alarm/controller also can be supplied to detect and indicate indoor air quality and control the ventilation system.

Tongdy’s almost products supply RS485 communication interface to connect to PC or other system. Some of thermostats can supply BacTalk interface to connect BacNet bus. With a team of highly talented engineers who have extensive research experiences, Tongdy can provide products with complex and special request, also with good stability, reliability and performance, and at lower prices! Especially with a team of highly talented engineers who have rich experiences, Tongdy can provide customized service to meet different customers’ requirements. These ODM service have gotten outstanding repute in prompt feedback and exact comprehending, also providing samples in a short time as well.

Tongdy’s various products have been exported to Europe, North America, Asia &Pacific Ocean, Gulf Area, and South America.