Dahua HY-SA21A-W2(868) | AirShield Wireless Smoke Detector with Siren

Dahua HY-SA21A-W2(868) — Wireless smoke detector with built-in siren for AirShield alarm systems

The Dahua HY-SA21A-W2(868) is a wireless smoke detector with a built-in siren from the AirShield series. When smoke is detected, the device immediately activates a powerful audible alarm and sends a push notification to the smartphone via the Dahua DMSS app. Thanks to its combined smoke detection and siren function in a single housing, this device is particularly suitable for standalone alerting without a separate siren. It communicates via 868MHz and Wi-Fi for a stable connection with the AirShield Hub.

Key features

• 2-in-1: smoke detector with built-in siren — detection and alerting in a single device
• 868MHz and Wi-Fi connectivity for a stable connection with 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 round design: Ø98 × 43 mm — discreet white design
• Indoor use
• 3-year warranty

Applications

• Standalone fire detection and alerting in bedrooms and hallways
• Fire protection in homes and small commercial premises
• Expansion of existing Dahua AirShield installations
• Combined fire and intrusion protection as part of a complete alarm system