Utilizes a stabilized electrochemical gas specific fast response sensor
Audible alarm starts at 35ppm
Backlit LCD display
Max, Data hold and Auto shut off
Includes carrying case and 9V battery
Specifications: Range: 1 to 1000 ppm CO Resolution: 1 ppm CO Accuracy: ±5% or ±10 ppm, whichever is greater Dimensions: 6.3 x 2.2 x 1.6" (160 x 56 x 40mm) Weight: 6.4 oz (180g)