Compatible and Easy to Use: This mechanical doorbell is compatible with most doorbell switches, convenient for widespread use; wired power supply provides a stable and reliable connection, no need to frequently replace batteries. Enhanced Home Security: This mechanical wired doorbell provides a reliable and effective solution for your home hotel access control system; its installation simplifies your security measures without sacrificing functionality. Loud and Clear Sound: This wired doorbell is equipped with a high-power speaker that provides a loud and clear sound that can be heard throughout the home; its powerful penetration ensures that you will not miss any visitor, adding color to your daily life. Easy Installation: Due to its surface-mounted design, this wired doorbell is easy to install; no complicated tools are required, saving valuable time and energy; enjoy the convenience of a quick and hassle-free installation process. Durable and Elegant Design: This wired doorbell is made of high-quality flame-retardant ABS housing, ensuring long-lasting durability while adding a touch of elegance to your home decor; its simple and elegant appearance complements any interior style Specifications: Condition: Brand New Item Type: Wired Doorbell Housing Material: ABS Color: As shown in the picture Installation: Surface Mount Volume: 80-95db Size: Approx. 15 x 9.5 x 4.5 cm / 5.9 x 3.7 x 1.8 in. Packing List: 1x Wired Doorbell