BENETECH GM8805 Portable Digital Carbon Monoxide Meter, Battery Not Included

1. Large LCD backlight digital and character display for easier reading.
2. Safety indication: regular light flashing and voice indication. When carbon monoxide concentration increases, buzzing voice frequency would also be increased.
3. Excellent audible alarm, low maintenance cost.
4. Support carbon monoxide detection.
5. Solid shell and robust electric characters.
6. Automatically shut off if it is not operated for 10 minutes.
7. Review of MAX and MIN readings, MAX, AVG and Data hold function.
8. Buzzer alarm setup function.
9. 2 x AAA battery(Not Included)