New Upgraded CF-20 Professional Air Quality Monitor 10-in-1, Accurate CO2 & PM2.5 Sensor Thermocouple Thermometer and general cold‑chain monitoring

and general cold‑chain monitoring

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

Key feature

the USB rechargeable indoor air sensor learns the baseline of your environment to ensure future spikes are reported accurately

New Upgraded CF-20 Professional Air Quality Monitor 10-in-1, Accurate CO2 & PM2.5 Sensor Thermocouple Thermometer and general cold‑chain monitoringCarefor 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,