Homlly IP55 Wireless Waterproof Home Doorbell With 58 MelodiesHomlly doorbell chime features 58 chimes and 4 levels adjustable volume to meet your different needs. IP55 dustproof and waterproof, withstand various harsh weather conditions (Works between 4F to 122F), suitable for any home, townhouse, apartment, office, school, hospital, hotel, etc. Operating range up to 100m in an open area with no obstructions. Higher penetration without worrying about signal obstruction, ensures you will never miss a visitor,