General description The Wireless Doorbell is a versatile and reliable chime kit designed for home use. With a wireless range of up to 400m, it ensures you won't miss any visitors, even from different rooms or floors. The doorbell features 55 melodies and 5 adjustable volume levels, providing clear sound and pleasant ringtones. Its waterproof design and blue LED indicators make it suitable for outdoor use, while also catering to the hearing impaired. Technical specifications Wireless range: up to 400m Volume levels: 5 (0-110 dB) Waterproof rating: IP55 Operating temperature: -30℃ to 70℃ Power supply for transmitter: 12V23A battery (lifespan: 1 to 3 years) Installation Plug the receiver into a power outlet. Attach the transmitter to the wall or door frame using the included double-sided tape or screws. Note: Avoid attaching the doorbell to metallic surfaces to maintain wireless range. Usage Choose from 55 different ringtones using the "Follow" or "Back" button. Adjust the volume to your