Doorbell for Large Homes: Using an FM signaling scheme, the range of a wireless doorbell can extend over 1000 feet long in open space. Ideal for large homes, teacher classroom management, apartments, offices and bedrooms. You will never miss a ringtone! EXQUISITE APPEARANCE AND HIGH QUALITY: The doorbell displays a subtle and novel industrial aesthetic and stylish design. Colorful LED lights twinkle on a white panel with silver trim, adding a contemporary touch to a child's room. Easy to install: Just plug the mini doorbell receiver into the outlet and stick the waterproof button to the wall with double-sided tape for a worry-free installation experience. Adjustable Ringtone: The portable doorbell receiver has 38 ringtones and 8 volume levels from 0 dB to 110 dB to meet your needs for different occasions. LED flashlights are suitable for the elderly and the hearing impaired. Expandable: Cordless doorbell systems can add multiple receivers or buttons to expand coverage. They can be freely paired one-to-one, and specialized ringtones can be set to suit your large house with multiple rooms. WEATHER-RESISTANT: The bell is made of high-quality waterproof material and has an operating temperature range of -4F to 140F, providing a high-performance experience in wind, snow, sleep, or extreme hot and cold temperatures.