Corporate
Language
Display & Control Transmission Fire Alarms
Logo

Logo

Hot Searches

Higher Education

Higher Education

Perimeter Protection

Perimeter Protection

Network Cameras

Network Cameras

Quick Links

City Business

Traffic Management

Fire Lane Parking Detection

Newsroom

Dahua Technology Introduces APOLLO BP3EW-4G to Expand Wire-Free 4G Security Monitoring

2026-04-20

Dahua Technology Introduces APOLLO BP3EW-4G to Expand Wire-Free 4G Security Monitoring

HY-GC20B-R8

Overview Specifications Download Sales Enquiry
HY-GC20B-R8
HY-GC20B-R8
HY-GC20B-R8
HY-GC20B-R8
Compare Favourite
HY-GC20B-R8

Wireless Interconnected Carbon Monoxide Alarm

Key Points
    > High-performance Figaro electrochemical CO sensor to deliver accurate detection of carbon monoxide leakage and respond quickly
    > Long standby time, low power consumption, 7-year battery life
    > Three separate LED indicators to provide clear and apparent working status illustration
    > Built-in high-volume buzzer with alarm volume 85dB (A) at 3 m (9.84 ft)
    > Support low battery warning, one-click silence, and self-test
    > Peak level display function to inform users extra potential hazards in home
    > Informative and easy-to-read CO concentration display in screen
    > Wireless interconnected with maximum of 24 devices
    > End of life warning: LCD display shows End with the buzzer beeping and LED indicator flashing three times per minute


Sales Enquiry
Datasheet

Specifications

Working Principle

Collection Type

Carbon Monoxide (CO)

Sensor Type

Electrochemical

Alarm

Alarm Type

CO alarm, fault alarm, low battery warning

Alarm Volume

Over 85dB (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

868MHz

Radio Signal Range

Up to 1000 m (3280.84 ft) in open air

Maximum Number of Interconnected Units

24pcs

Power Supply

Battery Life

7 years

Operating Voltage

3V DC

Operating Current

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

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

TÜV and CE listed

Compliance Standard

EN 50291-1:2018

Dahua Partner APP

Now with a fresh new look and lots of added features. Download the app today and enjoy your all-in-one business platform at your fingertips

logo Download

Please select your question

Back to Previous Site

To ensure continuity of service, the previous version of our official website remains available. You may access it via the link provided.

Previous Version
* Limited to a maximum of 4 products
Reset
Compare