Carbon Monoxide Detector, Gas Type CO, Detects Carbon Monoxide, Resolution 1 ppm, Housing Color Yellow, Operating Temp. Range 32 Degrees to 104 Degrees F, Alarm Type Audible and Visual, Battery Type 9V Alkaline, Display Backlit LCD, Features 3 Color Warning Light, Data Hold, Low Battery Indicator, Includes Holster with Belt Clip, Battery