https://en.tongdy.com/product/duct-mounted-multi-sensor-detector-pmd
The Tongdy PMD-18 Induct Air Detector is an in-duct air quality monitor that measures all 5 parameters required by the RESET Air Standard for Commercial Interiors, including PM2.5, TVOC, CO2, temperature, and humidity, with optional Modbus, RS485, RJ45 Ethernet, or WIFI connectivity interfacing.
The Tongdy PMD-18 Induct Air Detector is an in-duct RESET Air Accredited Grade B monitor for all 5 parameters.
The Tongdy PMD-18 Induct Air Detector is known to work with the following RESET Air Accredited Data Providers: QLEAR.