Optimal Solution for a Safe Environment: Secure your home with SECRUI’s door chime with adjustable volume! Easy to use and fully adjustable, these door chimes when the door opens for home are a practical solution for monitoring any door entry, whether it’s your toddler looking for his parents or a dangerous burglar..How it Works: These door sensor chimes feature a magnetic strip that is automatically triggered by the receiver when it’s separated. The receiver instantly alerts the person in charge by playing one of the 52 chimes that you can pick from..Wide Range of Action: Our door chime for business when entering has a 500ft operating range that is suitable for small and medium-sized homes, as well as shops and apartments. You can also use these door alarm sensor with additional SECRUI door sensors or doorbells for more safety and security..Pick Your Chimes: The door open chimes comes with 52 different chimes, including a special Christmas edition! To make it a more comfortable experience, our entry alert chime features 5 levels of volume that you can adjust anywhere from 0-110 dB so you can create a comfy environment for your family. The wireless door chimes also features LED indicators that work together with the sound so you can notice it quickly.