Tongdy Sensing Technology Corporation was established in 1999, located in Beijing Zhongguancun Environmental Science and Technology Park of the national high-tech enterprises.

In January 2017, Tongdy was listed on the new board. Its stock code is 870880.

Since 2004, Tongdy has engaged in production and development of indoor air quality monitoring and controlling products . So far, it has a strong technical development and product design capabilities. It has focused on environmental air quality monitoring and data transmission, on-site control, and ventilation purification system solutions for more than 10 years.

To provide environmental monitoring, industry applications, networking solutions and end products. Our main products are CO2 transmitter/controller, CO/VOC/ Ozone detector/controller, PM2.5/10 Indicator, Temp.& RH transmitter/controller and latest high-accuracy multi-sensor IAQ detector. These products are with Modbus RS485 communication interface options or BACNET interface options, as well as Zigbee or Wifi wireless interface options.