Duct mounted Multi-sensor detector 

• PMD-18 in-duct air quality detector is specially designed for monitoring multi-parameter air quality in air duct. It is suitable to be installed in return air duct.
• The built-in sensor module uses Tongdy’s patented technology and fully enclosed cast aluminium structure. It ensures the stability, air closure and shielding, greatly improves the anti-interference ability.
• Built-in a large air bearing fan, regulate the fan speed automatically, guarantee constant air volume and improve the stability and lifetime in long-term working.
• Special design of pitot tube inlet and outlet, to instead of air pump mode and no longer fretting about frequent replacement of air pumps.
• Easy to clean filter mesh, can be disassembled and used many times
• With temperature and humidity compensation, reduce the impact of environmental change.
• Real-time monitoring parameters: particles (PM2.5 and PM10), carbon dioxide (CO2), TVOC, optional carbon monoxide, air temperature and humidity.
• Provides WIFI, RJ45 Ethernet, RS485 Modbus communication interfaces selection.
• Connect a data platform for data storage, comparison and analysis.
• Read and display the measurements with Tongdy’s maintenance tool “NC18” together.
• Working with Tongdy’s indoor and outdoor air quality monitors together, comprehensively and accurately analyze the air quality.
• Reset/Well approval