300m Wireless Range: The wireless doorbell has a 300m wireless signal range, which won't be interfered with by other devices in your home or nearby. Never miss a visitor, even if you're only a few rooms away or on a different floor. IP55 Waterproof and Easy to Install: The material of the waterproof outdoor wireless doorbell meets the IP55 protection standard, which is suitable for low and high temperature environments and can function normally in rainy and snowy weather. The doorbell installation is simple and requires no wiring or screws. 60 Ringtones and 5 Volume Levels: Waterproof outdoor wireless doorbell with 5 volume levels, adjustable from 0dB (mute) to 115dB. There are 60 different ringtones that can provide loud and clear sound to meet your different needs. Flashing Blue LED Light: The wireless doorbell with flashing blue LED light gives you a strong visual signal (useful for the hearing impaired and the elderly) and you won't miss a single visitor. It's also an interesting and detailed design for non-users, as it lights up when in use.