Elevate your home security with the TOLVIVIOV Wireless Home Security Three Contact Door / Window Alarms. Designed for peace of mind, this system includes three sensors that monitor your doors and windows, ensuring that you're always informed when entry is attempted. The sleek black design is not only aesthetically pleasing but also blends seamlessly with any home decor.With easy battery-powered operation, these sensors are effortlessly installed and provide a reliable warning whenever needed. The system is designed for indoor use only and offers four zones of protection. The package comes complete with all necessary components to get your home security set up in no time.