[EN 50291] Carbon Monoxide Alarm / CO Detector

  • [Reliable Choice] Certified by EN 50291 (Certified by CNPP), CE and RoHS, can detect carbon monoxide, protect your family.
  • [LCD screen] With LCD screen, you can quickly know the current CO concentration.
  • [Sensitive Sensor] Advanced and sensitive sensor. When the CO concentration reaches 300PPM, the detection time is less than 3 minutes.
  • [Enough Sound] When the detector alarms, it can notify you with a sound above 85db.
  • [Mute Function] If the alarm is falsely reported, you can silence it for a period of time. The alarm will resume monitoring after the silent period.
  • [Compact Shape]The simple and compact shape, coupled with white color, is not obtrusive when placed at home, but also can protect your family safety.
  • [Easy Installation] It can be wall-mounted for easy and quick disassembly.
  • [Long Battery Life] Long-lasting battery life, 2 AA batteries can be used for 3 years.
  • [Test Function] With the Test function, you can test whether your device is operating normally every week.
  • [Does not Support Meross APP] This product can be used independently and cannot be used on Meross APP.
    • CE (Conforms to EN50291-1:2010+A1:2012)
    • RoHS
    • WEEE
    Type of Apparatus
    • Type B - to provide a visual and audible alarm only
    • 3V, 2 x AA alkaline battery, typical about 3 years
    Recommend Battery
    • GP GN15A / GP LR6
    Alarm Sound
    • ≥ 85 dB(A) at 1m (3ft)
    Detection Range
    • Maximum 40m² (430ft²) within a room
    • 102 ± 5 g or 3.6 ± 0.18 oz (battery not included)
    • 150 ± 5 g or 5.3 ± 0.18 oz (battery included)
    Dimensions (W x D x H)
    • 120 x 80 x 36.5 mm or 4.7 x 3.15 x 1.44 in.
    Sensor Type
    • Electrochemical
    • Operating Temperature: -10°C~40°C (14°F~104°F)
    • Storage Temperature: -20°C~50°C (-4°F~122°F)
    • Operating Humidity: 30%~95%­ non-condensing
    • Storage Humidity: 10%~95%­ non-condensing
    Package Contents
    • 1 x Alarm
    • 1 x User Manual
    • 2 x Expansion Screw
    • 1 x CE DOC
    Will the carbon monoxide alarm come with batteries?

    The alarm will come with 2 AA batteries. When using it for the first time, pull out the insulating sheet next to the battery, and the product can be used normally after tens of seconds of preheating.

    Why do I install a brand new battery into the alarm, the icon in the upper right corner of the LCD screen displays a battery icon that is almost dead, does this mean that the alarm is malfunctioning?

    This does NOT mean that the alarm is malfunctioning, it is a normal phenomenon. When the alarm is warming up, all the icons in the LCD screen will light up, including the battery icon. The battery icon here is only an icon and does NOT indicate the remaining power.

    How to know the remaining battery power in the alarm?

    When you load a fully charged battery, the green LED of the alarm will flash once every 33 seconds, indicating that the environment is safe (carbon monoxide is not detected) and the battery is sufficient. When the battery power is low, the yellow LED of the alarm will flash once every 33 seconds, and the buzzer will chirp once, and the LCD screen will display "Lb", indicating that the power is low and the battery needs to be replaced.

    Why does the alarm do not respond when I use carbon monoxide to test?

    1. Carbon monoxide is colorless, odorless and highly toxic. For your safety, please do not make carbon monoxide to test equipment by yourself!
    2. We recommend that you use our Test function to test the device. After installing the battery on the device (the device will warm up for tens of seconds), press the Test button, and you will hear a Chirp sound, which means that the alarm is working normally. If it does not sound, it may be an internal failure of the alarm, you can contact

    Learn More
    GS828 - User Manual - UK
    GS828 - User Manual - EU