Waremew Wireless Doorbell, Self-Powered Doorbell No Battery Required Push Button Waterproof Cordless Door Chime, with 35 Chimes, 4-Level Volume& LED Light

Specification? 1.Transmitter waterproof design 2.The transmitter generates electricity by pressing the button, no battery is required, and it is environmentally friendly and worry-free. 3.Transmitter Standby Power: 0mw 4.Receiver Power Supply: AC 85-265V 5.Receiver Volume: 4 level volume adjustable 6.Number of ringtones: 35(songs) 7.Operating Range: 150M 8.Four working modes : music + flash mode, music + lighting mode, music mode, flash mode. Package include: 1X Receiver 1X Transmitter 1X Double-sided adhesive 1X Instruction Manual 1X "PLEASE RING BELL"sticker