GZAIR 1100P CO2 Meter, Carbon Dioxide Monitor, IAQ CO2 Detector, NDIR Sensor, Temperature and Humidity, 0~5000ppm Range

USES: Classrooms, office, gym, restaurants, home, and car.
ACCURATE: Adapts advanced NDIR sensor technology with a 10-year life.
BATTERY: Li-Ion battery-powered with USB recharge for up to 8 hours of cordless operation. Also powered with direct USB power.
SIMPLE: Easy to use, not complex, basic, and accurate CO2 monitor. Desktop product.
TRUSTWORTHY: ** 1-year limited warranty ** 100% quality guaranteed **