Wireless Doorbell, Waterproof Battery, 3 Volume Levels, 38 Songs, for Home/Office/Classroom, EU Plug

No Batteries Required: You get one automatic button and one plug-in receiver. After pressing the button, it automatically generates power and sends a stable signal to the receiver. You no longer have to worry about frequent battery changes or dead batteries. Long Range: The top panel is highly anti-interference. You don't have to worry about a poor signal connection to the next door. The wireless doorbell has a range of up to 30 meters indoors and a detection range of up to 150 meters outdoors. Easy to Install: No wiring or installation by an electrician is required. Simply plug the receiver into the outlet and it's ready to use. The wireless doorbell is a small box that fits into any outlet. The doorbell comes with screws and strong adhesive, allowing for versatile installation.

Loud Wireless Doorbell: This doorbell receiver has 4 volume levels (including mute) from 0 to 80 dB. The volume is very loud and can be heard throughout the house, even for the hearing impaired. This way, you won't miss a visitor, even if you're just a few rooms away or on a different floor. The wireless doorbell offers 38 ringtones to choose from. You can change the ringtones on holidays or as you wish.

Cold-resistant and waterproof: Dust- and waterproof to IP44; Operates between -4°C and +60°C and can withstand a variety of harsh cold conditions.