[Power saving]: The upgraded LED light doorbell button is more beautiful and power saving than other doorbell switches; It's easy to find green light in the dark [Widely used]: This kind of luminous doorbell button switch is almost universal, suitable for low-voltage buzzer system, and is a good substitute for the old garage door opener or doorbell switch [ material]: It is made of solid door bell cover, which is not easy to break and deform. The interior is made of high-quality copper plate. This wall mounted door opener must be to be used for a long time without needing to be replaced again [Easy to install]: This wall mounted doorbell button is about 2.8 x 0.86 x 0.59 inches (L x W x H), equipped with 2 screws, and the screw hole spacing is 2.2 inches (note: wires are not included). If it is used as a substitute, it may not need to drill holes [Widely used]: This kind of luminous doorbell button switch is almost universal, suitable for low-voltage buzzer system, and is a good substitute for the old garage door opener or doorbell switch Colour:black Material:plastic Package Contents: 1 x doorbell Only the above package content, other products are not included. Note: Light reflection 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 33 hours Hope you have a pleasant shopping experience!