Check the listing for details. Kidde KN-COB-LP2 Carbon Monoxide Alarm Detector. Color: White, Condition: Open box. Listed at 17.89 USD. The Kidde 9CO5 battery operated carbon monoxide alarm utilizes sophisticated electronic components to protect you and your family from the dangers of carbon monoxide. This alarm includes a slide-out battery door that gives immediate access to the batteries and a safety feature that makes it difficult to close the door without the batteries being installed. Inside cover of battery door features quick reference guide for what to do in case of an alarm. This easy-to-install alarm is suitable for all living areas and has a 7-year life and a 5-year limited warranty.This product Kidde KN-COB-B (9CO5) replaces Firex 10200 and Firex 10220.Features & BenefitsBattery Operated (3AA's included) - Provides protection during power outage.Battery Lockout System - Deters covering battery compartment without installation of batteries.Slide-out Battery Door Cover - Gives immediate access to batteries.Test/Reset Button. Tests the unit for proper operation. Resets the Carbon Monoxide AlarmLow Battery Signal - Alerts user when the battery needs to be replaced.Green LED - Flashes every 30 seconds to indicate the unit is operating properly. The green LED will also flash before a CO reading is taken and when any button is pressed.Red LED - When a dangerous level of carbon monoxide is detected the red LED will pulse and a loud alarm pattern will sound. The carbon monoxide alarm pattern is 4 short beeps, followed by 5 seconds of silence, followed by 4 short beeps with a corresponding red LED flash. This cycle will continue for 4 minutes and then change to 1 cycle every minute until the device is reset or the CO is eliminated.Part #9CO5-LPModelKN-COB-B-LPMPower Source3 AA BatteriesSensorElectrochemicalAudio Alarm85dB at 10ftTemperature Range40°F (4.4°C) to 100°F (37.8°C)Humidity Range5%-95% relative humidity (RH)Size4.5" L x 2.75" H x 1.5" DWeight.5lb