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  6. Carbon Monoxide Alarm System
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  8. Wireless Carbon Monoxide Alarm
  9. Wireless Carbon Monoxide Alarm
    Dahua

    Wireless Carbon Monoxide Alarm

    Stock Code: HY-GC20D-R8

    Detects carbon monoxide leakage quickly and links wirelessly to other alarms.
    A wirelessly interconnected alarm that monitors carbon monoxide buildup indoors. Its Figaro electrochemical sensor picks up gas accurately, and it links to up to 24 devices on the 868 MHz band. The LCD screen shows the live CO concentration.
    85 dB (A)Alarm volume
    868 MHzOperating frequency
    24 devicesInterconnection capacity
    1000 mRadio signal range
    -10°C to +55°COperating temperature
    Key features
    85dB (A)
    High-volume built-in buzzer
    The built-in buzzer sounds at this level measured at 3 m.
    24devices
    Wireless interconnection
    Up to 24 alarms link to each other on the 868 MHz band.
    1000m
    Open-air range
    The radio signal reaches this far in open air.
    50ppm
    Staged alarm threshold
    It alarms within 60-90 minutes at 50 ppm and within 3 minutes at 300 ppm.
    3V
    CR123A lithium battery
    The device runs on a built-in 3 V CR123A lithium battery that cannot be replaced.
    EVERYDAY USE
    Status at a glanceRed, yellow and green LED indicators report alarm, fault and power separately.
    Silence and self-testThe silence button cuts the alarm sound, and the self-test button confirms the device works.
    End-of-life warningThe LCD screen shows End, the buzzer beeps and the LED indicator flashes three times per minute.
    ApplicationsHomes·Indoor living spaces
    For indoor use only; complies with EN 50291-1:2018.
    Working Principle
    Collection Type Carbon Monoxide (CO)
    Sensor Type Electrochemical
    Alarm
    Alarm Type CO alarm, fault warning, low battery warning
    Alarm Volume Over 85 dB (A) at 3 m (9.84 ft)
    Alarm Mode Visual and audible alarm
    Silence Function Support
    Alarm Response Threshold 50 ppm: 60 min–90 min
    100 ppm: 10 min–40 min
    300 ppm: < 3 min
    Basic Parameters
    Display LCD
    Indicator Light LED (red/yellow/green)
    LED Instruction Alarm: Red indicator
    Fault: Yellow indicator
    Power: Green indicator
    Operating Frequency 868 MHz
    Radio Signal Range Up to 1000 m (3280.84 ft) in open air
    Maximum Number of Interconnected Units 24pcs
    Power Supply
    Battery Life 10 years
    Operating Voltage 3V CR123A lithium battery (non-replaceable)
    Operating Current Monitoring Current: 20 µA
    Alarm Current: 20 mA
    Operating Ambient
    Operating Environment Indoor use only
    Operating Temperature –10°C to +55°C (+14°F to +131°F)
    Operating Humidity 95% RH (non condensing)
    Appearance
    Color White
    Material PC + ABS
    Dimensions 116.4 mm × 71.7 mm × 29.1 mm (4.58" × 2.82" × 1.15")
    Weight 125 g (0.28 lb)
    Installation Wall Mount
    Certification
    Certifications TUV and CE listed
    Compliance Standard EN 50291-1:2018

    Datasheet

    HY-GC20D-R8

    pdf8/19/2025

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