Fenary Carbon Monoxide Detector,Carbon Monoxide Alarm with PPM Display,CO Alarm with Test Button Battery Powered,CO Detector Monitor with 85 dB Audible for Home and Holiday(Batteries NOT Included)

Advanced CO Detection: Equipped with an advanced electrochemical sensor,This carbon monoxide detector detects dangerous levels of carbon monoxide (CO) in your home. Upon detecting hazardous CO concentrations, the alarm emits a loud sound (85 dB at 3 meters) alongside a flashing red ‘CO’ LED light.

Portable Carbon Monoxide Detector: Measuring 123 x 70 x 25 mm, this compact,free standing CO Detector with 1PCS double-sided adhesive is easy to carry and provides protection wherever you go. It also includes an integrated mounting bracket and screws for easy wall mounting.

Intuitive LED Indicators: The CO alarm has 3 LED indicators that provide clear information about its working status. The green LED indicates normal operation (30-second flashing green light), the red LED indicates alarm (CO alarm flashes red light and has a warning Alarm) and low battery reminder (low battery flashes red light but no sound), and the yellow LED indicates fault (flashing yellow light).

Alarm Memory: Your CO alarm device will notify you of a CO alarm when you are away. If not silenced, the alarm will continue to sound until CO levels reach a safe level. The red "CO" light will continue to flash as a visual indication of previous activation.Please press the Test Slience key to let the alarm slient.

Sensitive sensing: The digital LCD display shows various real-time carbon monoxide concentrations ranging from 000 to 999PPM, the blue words light up automatically, and the display shows that the concentration exceeds 30ppm; 50ppm, alarm within 60 to 90 minutes; 100ppm, alarm within 3 minutes; 300ppm, alarm within 3 minutes. Note: When testing the detector, do not use gas to blow directly into the hole.

How to use the carbon monoxide alarm, It is powered by 3 AAA batteries(Not included the batteries). After the batteries are installed, it automatically turns on, then enters a 30-second countdown and enters the working mode. The PPM value can be seen at any time. The Indicator light and PPM number light will go out without any operation,But the green LED flashes once every 30 seconds to indicate normal operation.