Fluke Carbon Monoxide Meter, 1000 PPM

Rugged case and electronics. Automatic sensor zeroing and self-test sequence upon start-up CO level beeper can be silenced if desired Automatic power-off after 20 minutes extends battery life Large LCD displays CO levels from 0 to 1000 ppm. Bright back-light allows easy screen viewing under dim lighting conditions. Beeper triggers with increasing frequency as CO levels rise. MAX Hold function stores and displays the maximum CO level