Mini CO2 Monitor, 3-in-1 Portable Carbon Dioxide Detector Temperature Humidity Air Analyzer, Stylish Highly Accurate CO2 Meter Sensor, Air Quality Monitor for Home Indoor Travel

CO2 Measurement Range: 400-5000ppm

Measurement Accuracy:

Temperature: ±1℃

Humidity: ±5%

CO2 Concentration: 5% ±50PPM

Battery Life:

Built-in 1200mAh high-capacity battery

Works for about 20-30 hours

USB fast charging

Display:

Large LCD screen with Smiley Tips for easy reading

Charging and discharging protection

Supports long-time power supply via USB

Package Contents:

MINI CO2 Detector: 1 piece

USB C Cable: 1 piece

User Manual: 1 piece

Testing Technology:

High Accuracy Non-Dispersive Infrared (NDIR) Technology

Real-time monitoring of CO2, temperature, and humidity

CO2 Indicators:

400~799ppm: Only the first smiling face is always on.

800~1199ppm: Only the second smiling face is always on.

1200~1599ppm: Only the third expression shines.

1600~1999ppm: Only the fourth expression shines.

2000ppm and more: All four expressions shine together.

This CO2 detector seems to offer accurate measurements, a long battery life, and a user-friendly design with smiley face indicators for CO2 levels.