Dahua HY-GC21B-W2(868) | AirShield Wireless Gas and CO Detector

Dahua HY-GC21B-W2(868) — Wireless Gas and CO Detector for AirShield Alarm Systems

The Dahua HY-GC21B-W2(868) is a wireless gas and CO detector from the AirShield series, designed for reliable detection of dangerous gas concentrations and carbon monoxide indoors. When detection occurs, an alarm is sent immediately to the AirShield Hub, along with a push notification to the smartphone via the Dahua DMSS app. The device communicates via 868MHz and Wi-Fi for a stable, interference-free connection.

Key features

• Gas and CO detection — reliable detection of dangerous concentrations
• 868MHz and Wi-Fi connectivity for a stable connection to the AirShield Hub
• Immediate push notification in the event of an alarm via the Dahua DMSS app
• Compatible with Dahua AirShield alarm systems
• Fault detection and communication encryption
• Wireless — easy installation without cabling
• Compact size: 117 × 72 × 29 mm — discreet white design
• Indoor use
• 3-year warranty

Applications

• Gas detection in kitchens, boiler rooms, and garages
• CO monitoring in homes and commercial buildings
• Expansion of existing Dahua AirShield installations
• Combined fire and gas protection as part of a complete alarm system