Compatible and Easy to Use: This mechanical doorbell is compatible with most doorbell switches, making it convenient for widespread use; Wired power ensures a stable and reliable connection, eliminating the need for frequent battery replacements Improve Home Security: This mechanical wired doorbell provides a reliable and efficient solution for your home hotel access control system; Its installation simplifies your security measures without sacrificing functionality Loud, Clear Sound: Equipped with a high-power speaker, this wired doorbell provides loud, clear sound that can be heard throughout your home; Its strong penetration ensures that you never miss a visitor, adding convenience to your daily life Effortless Installation: With its surface mount design, installing this wired doorbell is a breeze; No complicated tools are required, saving you valuable time and effort; Enjoy the convenience of a quick, hassle-free installation process Durable, Stylish Design: Made from a high-quality flame-retardant ABS shell, this wired doorbell ensures long-lasting durability while adding a touch of elegance to your interior decoration; Its simple and generous appearance complements any interior style Specification: Condition: 100% Brand New Item Type: Wired Doorbell. Shell Material: ABS Color: As picture shown Installation: Surface Mount Sound Volume: 80-95db Size: Approx. 15 x 9.5 x 4.5cm / 5.9 x 3.7 x 1.8in Package List: 1 x Wired Doorbell