DATA LOGGING UPGTADE -- Portable handheld
Smart air quality monitor indoor: Support data storage and export of all 12 testing items, with date and time, frequency: once every 1 minute. MAX storage capacity can be expanded to 8G, which can store up to 400 days of records
PROFESSIONAL & ORIGINAL-- air quality alarm base on US standard; 2200 mAh rechargeable lithium battery; stereo air convection sampling and active air interactive system; Silent fan without noise; Anti-fall PE soft shell