Nondispersive infrared (NDIR) technology measures CO2
levels in ppm. May be used as a handheld portable (internal, rechargeable battery) or wall-mounted for continous recording with a WatchDog Data Logger (one CO2
meter per logger).
Includes 6-volt DC transformer. Range: 0-4,000 ppm. Accuracy: +/- 5% of reading or 50 ppm, whichever is greater.