1) Range: 0~2400ppb / 0~2.40ppm (if more than the range it will display “—”

2) Resolution: 2ppb / 0.02ppm

3) Accuracy: -10ppb / 0.01ppm

4) Temperature ATC range: 0~50°C(32~122°F), if out of range it will display “L” (low) or “H” (high).

5) Temperature resolution: 0.1°C

6) Accuracy: -0.2°C

7) Auto off: 10 minutes no operation.

8) Low battery indicator

9) Automatic backlight ON/OFF.

10) Power: 1.5V * 4pcs (LR44/AG13 battery)Included.