408-900-0113-02 Features: -Digital display. -Test/reset button. -1 second alarm and ''gas'' on display for gas detection. -4 quick beeps for CO alarm. -Gas Type: Carbon Monoxide, Gas. -Sensor Type: Electrochemical. Product Type: -Carbon Monoxide Detector. Orientation: -Wall/Ceiling Mounted. Power Source(s): -9V Battery. Mounting: -Wall. Compliance, Standards: -UL Listed. Generic Specifications: -Power Source: 120 VAC. -Sound Level: 85 dB. Dimensions: Overall Height - Top to Bottom: -11.25". Overall Width - Side to Side: -7.5". Overall Depth - Front to Back: -2.25". Overall Product Weight: -1.5 lbs.