Package Included:<br />1 x Smoke Alarm<br />1 x English User Manual<br />2 x Expansion Plugs<br />2 x Screws<br /><br />Specifications:<br />Dimension: Approx. 11.4x 3.5cm/ 4.89x 1.38 "<br />Power Supply: 1 x 9V alkaline 6LR61 or carbon zinc batteries 6F22<br />CO: Sensitivity & time<br />Smoke: 1%~5%/ FT OBS<br />Standby Current: <100uA<br />Alarm Current: <75mA<br />50ppm: Alarm 60-90 minutes<br />100ppm: Alarm 10-40 minutes<br />300ppm: Alarm 3 minutes<br />Operation Ambient Condition: 5~40→， 20~90% R.H.<br />Green LED flashes every 30 seconds to indicate the unit is operating properly<br />Red LED， when a dangerous level of carbon monoxide is detected and a potential fire is detected， the red LED will flash and the alarm pattern will sound<br />Digital display shows the level of carbon monoxide the unit is sensing<br />Memory Peak Level Button - Displays the peak CO level recorded by the alarm since it was last reset or unplugged<br />Apply for universal safety application: such as installation for rv， travel trailer， boat， home， house， natural gas detection， truck， car， garage， bathroom， kitchen area， household， office， warehouse， etc