Features:Product name: wireless -powered digital doorbellWorking voltage: no battery requiredRemote control distance: 100M (in an open environment)Waterproof rating: IP44 (life waterproof)Plug Type:EU Plug,it applies to Indonesia, Germany, , Spain, and so onPlug: European standardVolume adjustment: high or medium or low or muteMusic: a variety of chords to fromColor: whiteMaterial: ABSSpecializing in the production of high-quality multifunctional wireless doorbells.It can be used as a doorbell or as an calling machine.Elderly people and pregnant women can carry it with and ask for help at any time in danger.Touch to trigger, no battery needed, just press to trigger.The buttons are waterproof, so t worry about long-term .The open-air remote control distance can reach 100m, and the working range is extremely long.Meet the needs of residential and high-rise buildings.Easy to install with double-sided tape or screws.The working range in open areas can reach 100 m.It can you hear and answer the doorbell in time, and you will never miss a visitor.Package Contents:1 x Doorbell button1 x Receive Only the above package content, other products are not included.Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is 1-3cm.