2PCS Mini Carbon Monoxide Alarm Smoke Detector CO Sensor Battery Alert Fire Sound Alarm for Home Sec

1. Accurate CO Detection: Our Carbon Monoxide Detectors meet UL2034 standards for accurate sensing and high stability. It will alert if the carbon monoxide in the air is higher than the safe concentration.2. Loud Alarm: When a dangerous level of carbon monoxide is detected, the red LED will flash and emit a loud alarm that can be heard even through walls, reminding you to make your as soon as possible to avoid danger.3. Visible LED Display: 3-digit display, when a carbon monoxide leak is detected, the current value will be displayed according to the concentration (note that it will not be displayed when it is 30ppm), an intuitive display for greater peace of mind.4. Easy Installation: Powered by 2 AAA batteries (not included), slid to remove the back cover and replace the batteries. The back is equipped with wall mounting holes, can be fixed by the included screws, safe and fast.5. Alarm Standard: 50ppm, alarming within 60 to 90 minutes; 100ppm, alarming within 10 to 40 minutes; 300ppm, alarming within 3 minutes. Note: When you test the detector, do not blow the hole directly.Product name:Carbon monoxide alarm (mini model)Detection gas:CO carbon monoxideAlarm : sound + flash alarmPower supply :DC3V (AAA battery x 2pcs)(batteries not included)Measuring range:0-999ppmAlarm sound: equal 75dB (1m directly in front)Alarm concentration:light up the screen when 50ppm, alarm when 150ppmWorking environment:temperature -10-60, relative humidity less than equal 95%Colour:WhiteMaterial:ABSSize:7.8x7.8x3.8cmPackage Contents:1 x Carbon Monoxide Detector (batteries not included)1 x Screw PackOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +\/- 1-3cm.