Loud Enough: This doorbell ringer wireless receiver has 4 levels of adjustable volume (including mute) and is loud enough to be heard throughout the house.The flashing indicator light is easy for people to notice including the hearing impaired 51 Ringtones: It has 51 ringtones to choose from which is great because you can change the holiday chime or whatever youre interested in like the classic Ding Dong or Morning Bell. or morning bell Long Range: You get a selfpowered waterproof button and two plugin receivers and the doorbell wireless is able to operate properly within a 490in-150m range making our home wireless doorbell very useful for things like side porch areas Batteryfree wireless doorbell: Wireless doorbell is certified. No more worrying about replacing batteries frequently and when the batteries run out Coldresistant and Waterproof: Can withstand all kinds of cold weather conditions. This home wireless doorbell can also be used as a caregiver pager for caregivers and patients-elderly-residents-disabled-sick while still seeking help at home