Dahua wireless carbon monoxide detector with electrochemical sensor and LCD display

Technical Specifications

• Dahua Wireless Carbon Monoxide Detector
• Electrochemical sensor for continuous detection of CO concentration
• LCD screen to display CO concentration
• Response time at 50 ppm: between 60 and 90 minutes
• Response time at 100 ppm: between 10 and 40 minutes
• Response time at 300 ppm: less than 3 minutes

Functionalities

• Self-test function
• One-touch mute for approximately 45 seconds
• Three LED indicators to clearly display the device’s status

Alarms

• CO alarm, fault warning, and low battery warning
• Audible and visual alarm
• Sound pressure level greater than 85 dB(A) at 3 m
• Red LED for alarm, yellow LED for fault, and green LED for power

Communication interface

• Radio communication at 868 MHz
• Range of up to 1,000 m in open space
• Frequency hopping
• AES128 encryption

Power

• Replaceable 3 V CR123A lithium battery
• Battery life of up to 3 years
• Standby current ≤20 µA
• Current consumption during alarm ≤10 mA

Environmental

• For indoor use only
• Operating temperature: -10 °C to +40 °C
• Operating relative humidity ≤95%, non-condensing

Physical characteristics

• White PC and ABS housing
• Wall-mounted
• Dimensions: 116.4 × 71.7 × 28.3 mm
• Weight: 125 g

Contents

• DAHUA-5557 Radio-Frequency Carbon Monoxide Alarm (DHI-HY-GC21B-W2(868))

Certifications and Standards

• TÜV and CE Certifications
• Compliant with EN 50291-1:2018 and EN 50291-2:2019