Broad applicability Designed to prevent energy waste and safety risks, this alarm is suitable for air conditioners and refrigerators. It offers a versatile application that promotes responsible use while maintaining a safe environment against unintended door issues. Intelligent detection system Features smart detection with embedded sensors to identify open or closed status. It provides spoken warnings for forgotten freezer doors or windows to ensure optimal appliance performance. Easy to install The freezer door alarm offers multiple installation options and adjustable volume settings, creating a user friendly solution that requires no technical knowledge. Efficient energy management Built for energy conscious households, it minimizes power consumption with an energy efficient design that meets modern demands for resource conservation and operating efficiency. Use scenarios - At home with multiple appliances: Prevent energy waste and potential spoilage by ensuring fridge or freezer doors are closed. - Busy households with kids or elderly family members: Timely spoken reminders help keep doors shut and maintain climate control. - Offices or dorm rooms: After hours, ensure doors are closed to preserve conditioned air and reduce energy costs.