[Strong Signal, Everywhere] Our doorbell offers a powerful range of 400 meters in open areas, ensuring you always stay connected. Whether you're in the garden, upstairs, or even in the basement, you'll never miss a visitor again. [All-Weather Performance] Our radio doorbell is dustproof and waterproof, supporting temperatures from -30℃ to 70℃. It's built to withstand harsh conditions while boasting extremely low power consumption [Personalized Sound, Flexible Modes] Enjoy precise control with 5 volume levels up to 110dB, perfect for the hearing-impaired or elderly. Easily switch between LED-only or LED and Ringtone modes, and choose a personalized alert from 55 melodies. Your last settings be saved for your uninterrupted convenience. [Reliability Meets Excellence] Our wireless doorbell set is not only reliable, but we're also committed to providing excellent customer service, supporting you around the clock. Color:Black Material:ABS Package Contents: 1 x mitter (3 x AA Battery Not Include) 1 x Receiver 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.