Nest Protect

Design a smart flood and fire early warning system using Zigbee water leak sensors under sinks and washing machines, smoke detectors (Nest Protect vs Zigbee), CO detectors, and automated fire response that shuts HVAC and unlocks exit doors — with immediate LINE alerts.

Design a complete safety system for elderly living alone: Emergency Button, Smart Pill Dispenser, Geofence GPS, smoke/CO detection, and Smart Gas Valve — all connected to LINE OA family alerts.