Feature:1. High Sensitivity: The CO alarm can provide rapid detection of subtle CO concentration changes, providing real time warnings, ensuring your safety.2. Mini Size And Portable: The CO detector has small and lightweight design, easy to carry and install, space saving whether traveling or at home.3. Durable Material: The CO leakage alarm is made of durable and reliable material, high strength and wear resistant, ensuring its stability and reliability, having long service time.4. Sound And Light Warning: When the concentration of CO is detected, a high decibel alarm and high brightness light will be issued to remind the user to take timely measures.5. Multiple Use: The CO monitor alarm is suitable for vehicle, RV and home, ensuring you and your families safety, practical for daily use.Specification:Item Type: CO AlarmMaterial: ABSBattery Type: Lithium BatteryBattery Model: 2Pcs 1.5V AAA (Not Included)Static Current: <10uAAlarm Current: <30mAAlarm Sound: Sound And Light WarningSensor: Electrochemical CO SensorOperating Temperature: 0-50CWorking Humidity: Relative Humidity 10%-95%CO Detection Concentration: 000-999 PPMAlarm iIndication: LCD Display, Sound and Light PromptPower Display: Low Battery Alarm.Package List:1 x CO Alarm2 x Double Faced Adhesive Tape1 x English Instruction2 x Screw2 x Expansion ScrewsNote:Shipped Without Battery