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

    Standalone Carbon Monoxide Alarm

    Stock Code: HY-GC20D

    Measures the indoor carbon monoxide level and alarms once the threshold is passed.
    A standalone carbon monoxide alarm with an LCD screen. Its high-performance Figaro electrochemical sensor picks up gas leakage accurately, and the screen shows the live CO concentration. It works as a single wall-mounted unit.
    85 dB (A)Alarm volume
    10 yearsBattery life
    3 V CR123APower source
    -10°C to +40°COperating temperature
    Wall mountInstallation type
    Key features
    85dB (A)
    High-volume built-in buzzer
    It holds the alarm level above this value at 3 m.
    10years
    Long battery life
    Low power consumption and long standby time keep the device running for years.
    45seconds
    Short silence period
    The silence button cuts the alarm sound for about this long.
    300ppm
    Fast response threshold
    At 300 ppm it alarms within 3 minutes.
    20µA
    Low monitoring current
    It draws very little current on standby and climbs to 10 mA during an alarm.
    EVERYDAY USE
    Status at a glanceThree red, yellow and green indicator lights separate alarm, fault and power.
    Silence and self-testThe silence button cuts the alarm sound, and the self-test button confirms the device works.
    Compact bodyThe compact, modern body takes little wall space, and installation finishes in simple steps.
    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
    Silence Duration About 45 seconds
    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
    Power Supply
    Battery Life 10 years
    Power Source 3V CR123A lithium battery (non-replaceable)
    Operating Current Monitoring Current: ≤20 µA
    Alarm Current: ≤10 mA
    Operating Ambient
    Operating Environment Indoor use only
    Operating Temperature –10°C to +40°C (+14°F to +104°F)
    Operating Humidity ≤95% RH (non-condensing)
    Appearance
    Color White
    Material PC + ABS
    Dimensions 116.4 mm × 71.7 mm × 28.3 mm (4.58" × 2.82" × 1.11")
    Weight 125 g
    Installation Wall Mount
    Certification
    Certifications TUV and CE listed
    Compliance Standard EN 50291-1:2018

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