Reliable Alarm & Alerts 90dB On‑Site Alarm – Loud siren deters intruders and alerts occupants APP Push Notifications – Instant alerts via Tuya / Smart Life when door/window is opened Double Alarm – Simultaneous local siren and remote notification for full coverage Smart Monitoring Door/Window Status Query – Check open/closed status anytime from anywhere Opening History Record – View timestamps of every door/window event Battery …