• Size: 5" Wide X 3-1/4" Tall

• Plug In With Battery Backup Electrochemical Sensor Carbon Monoxide Alarm With Test Button

• Electrochemical Sensors Are The Most Accurate Technology Available For Detecting Carbon Monoxide

• Single Button Test/Silence For Simplicity

• Loud 85dB Alarm To Assure Alarm Is Heard

• End Of Life Alarm Notifies You At 84 Months After Installation

• Power Source: 120V Outlet With 9V Battery Backup (Included)

WARNING: This product can expose you to chemicals including diethylhexyl phthalate (DEHP) which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.