Practical versatility and reliable monitoring - Prevent energy waste and safety risks with intelligent reminders. Compatible with air conditioners, safes, refrigerators, and security doors to help ensure efficient use of devices and dependable monitoring. Precise door sensor with clear alerts - Uses intelligent detection and built-in sensors to track the state of doors or windows. If a door or window is left open, a voice alert sounds to remind you, reducing the risk of forgotten openings. A simple solution to improve home safety and keep your environment secure. Easy installation and user friendly - No technical knowledge required. Simple setup with adjustable volume and multiple mounting options for quick, trouble-free installation of the freezer door alarm. Eco-friendly design - Engineered for energy-conscious households. Reduces power consumption through an efficient design without sacrificing function or usability. A smart and eco-friendly choice for everyday use. Use scenarios - Fridge or freezer care: Receive a voice alert if the refrigerator or freezer door is left ajar, helping save energy and preserve food quality. - Home security and safety: Monitor exterior doors or safes; an alert helps prevent potential hazards or unauthorized access. - Appliance energy management: Use with air conditioners or other appliances to remind you to close doors, supporting overall energy efficiency without compromising convenience.