More info
Faster response measurements to 1000ppm
Features:
    •Easy to read 1999 count backlit displays CO levels from 0 to 1000ppm
    •1ppm resolution with ±5% or ±10ppm basic accuracy (whichever is greater)
    •Utilizes a stabilized electrochemical gas specific (CO) fast response sensor
    •Audible alarm starts at 35ppm
    •Backlight for low light conditions