Dahua Wireless Smoke Alarm DHI‑HY‑SA21A‑W2 – Battery‑Powered, Split‑Spectrum Photoelectric, 85 dB Output, 3‑Year Battery Life Hik Vision detailed footage in both day

detailed footage in both day and night conditions

4GHz (400 Mbps) and 5GHz (867 Mbps) bands using Wi-Fi 5 (802

IP-Only Communication – Connects via Ethernet for fast

Snag-Free Boot Design – Prevents pin damage during install and removal

Dahua Wireless Smoke Alarm DHI‑HY‑SA21A‑W2 – Battery‑Powered, Split‑Spectrum Photoelectric, 85 dB Output, 3‑Year Battery Life Hik Vision detailed footage in both dayThe Dahua DHIHYSA21AW2 Wireless Smoke Alarm is a highperformance, batterypowered smoke detection unit designed for residential and light commercial settings. It integrates advanced splitspectrum photoelectric sensing with low power consumption and wireless connectivity to deliver early smoke detection and fast alertingwithout needing mains wiring. Notifications can also be relayed through Dahuas DMSS app in real time for enhanced safety awareness.