· Multi-dimensional monitoring for carbon dioxide (CO2), air temperature, and humidity · Easy-to-read E-ink screen with large display (4.23 inches) · 10-year life and high-performance sensor for CO2 detection based on NIDR+Photoacoustic technology · Informative detail display of detection, and Emoji Comfort Indicator · Apparent 3-colour LED indicator for illustrating air quality (good, normal and bad) · Built-in 2500mAh rechargeable lithium-ion battery (lasts up to 1
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