HY-GC21B-W2(868) – Dahua Wireless Carbon Monoxide Alarm

Working Principle

Collection Type

Carbon Monoxide (CO)

Sensor Type

Electrochemical

Alarm

Alarm Type

CO alarm, fault warning, low battery warning

Alarm Volume

Over 85dB (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

Wireless

Carrier Frequency

868 MHz

Communication Distance

Up to 1000 m (3280.84 ft) in an open space

Frequency Hopping

Yes

Encryption Mode

AES128

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

3 years

Power Source

3V CR123A lithium battery (replaceable)

Operating Current

Monitoring Current: ≤20uA Alarm Current: ≤10mA

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

TÜV and CE listed

Compliance Standard

EN 50291-1:2018, EN 50291-2:2019