Versatile applications across multiple settings Smart Sensor: Uses intelligent detection and integrated sensors to precisely monitor open and closed states. It provides voice notifications for doors or windows left open, helping to improve overall household security. Quick installation: Easy setup with multiple mounting options. The user-friendly design requires no technical know-how. An adjustable alarm volume lets you tailor alerts for freezer door usage. Environmentally friendly system: Minimizes power consumption and offers a practical, cost-effective solution for energy-conscious households to reduce their carbon footprint. Use scenarios: - Monitor front and back doors or windows to prevent forgotten entries - Protect freezer or fridge doors to save energy and preserve contents - Keep an eye on kitchen or utility room doors to manage storage areas