Portable and energy efficient - no radiation, environmental protection and energy saving. Mini size, compact and portable, easy to use and reliable. Small and exquisite, take it with you when you go out. Safe and stable - Protect your life and property. This product is fine workmanship, using high quality materials, excellent performance, strong safety, strong working stability. Ring loudly - The alarm has a loud sound and flash fast for greater attention. Even if you are sleeping, the super alarm sound will be awakened by such a loud sound. No need to worry about dangerous situations. Provide automatic event notifications. Quality Assurance: Our products have been rigorously tested. If you have any problems after purchase, you can always ask for help and we will solve them as soon as possible. Easy to install: very convenient, economical, complete and easy to use configuration, the installation process is simple and convenient, saving you time and effort. Color: As shown in the picture.