Home Security : Enhance your safety with our door open alert system. Ideal for homes, offices, stores, and classrooms, it ensures you're always aware of who's coming and going. Multiple Ringtones : Choose from a variety of melodies to customize your alert sound, fitting your personal preference and the occasion. Practical Design : Crafted with care, our wireless door sensor boasts a compact size that saves space without compromising on style or performance. Long Operating Range : Enjoy reliable operation up to 150 meters away, ensuring you receive alerts even when you're not near the entry point. Adjustable Volume : Tailor the volume to your environment, from silent to 110 dB, catering to your specific needs and surroundings. Enhance your home security with a touch of elegance and convenience. Our door open alert system combines form and function, providing a seamless integration into your daily life.