Tuya WiFi 15 in 1 Indoor Air Quality Monitor APP Control Multifunctional NEWIbRg
Alerts and Visual Warnings: The Formaldehyde Detector connects to WiFi. Gas Type: Multifunctional. Formaldehyde detection range: 0-1.99mg/m³, ±0.05mg/m³. For example, set an exhaust fan to turn on when CO2 exceeds 1500ppm and off below 800ppm.