New Upgraded CF-20 Professional Air Quality Monitor 10-in-1, Accurate CO2 & PM2.5 Sensor Thermocouple Thermometer Key feature

Key feature

You can short-press the power button to mute the audible buzzer at any time

easily bending to reach hidden pipes

it's an ideal and economic Freon Leak Detector which can detect all kinds of halogen refrigerants including CFCs

5℃（other） Humidity range 0-90%RH

New Upgraded CF-20 Professional Air Quality Monitor 10-in-1, Accurate CO2 & PM2.5 Sensor Thermocouple Thermometer Key featureCarefor Upgraded CF 20 Professional air quality detector helps you breathe cleaner air About this item Customisable Health Protection: CO2 monitor allows you to set your own safety limits with adjustable alarm thresholds. The device flashes red and beeps twice every 10 seconds when pollutant levels rise. ProLevel Manual Calibration: The formaldehyde tester maintain longterm precision with easyaccess calibration modes for CO, temperature and humidity,