Features:
1. High Accuracy Sensor: Adopts infrared sensor to measure CO2, temperature and humidity, which is more accurate, more reliable and more durable than traditional electrochemical sensors.
2. Automatic Alarm System: When the CO2 value exceeds 1500PPM, an alarm will be issued automatically, you will hear beep sound, which notify you to keep the indoor environment ventilated in time.
3. Long Working Hours: The built-in large capacity battery can work about 16~20 hours, and 2 hours charging to be full.