The 770 is a state-of-the-art monoxide instrument designed to measure CO in ambient air. This palm-sized unit displays readings in 1ppm increments.

Features:

• Measure CO from O to 999ppm
• Displays the max. CO reading in PPM since power on
• Displays in hours and minutes, time elapsed since power on
• Displays user set value of audible and visual alarm
• The audible alarm can be switched on and off by pressing the SEL button
• 2-year sensor life
• Accuracy: +/- 3 ppm or 5% whichever is greater
• 3-year limited warranty!