1. Quality flame retardant ABS shell, durable to use, and it looks simple and generous. 2. Mechanical doorbell, can be used with most doorbell switch. 3. Wired power supply, convenient and practical for using. 4. Wall-mounted installation, no need complicated tools, save time and effort. 5. speaker, provides loud sound and strong penetration. Condition: New Item Type: Wired Doorbell Installation: Surface Mount Sound Volume: 80-95db Colour:white Material:ABS Size:15x9.5x4.5cm Package Contents: 1 x Wired Doorbell Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours Hope you have a pleasant shopping experience!