ELRO DB6000 Wireless Kinetic Doorbell Kit - with 2 USB-C Quick Charge Ports No Battery Required

NEVER REPLACEMENT BATTERIES - The kinetic doorbell button produces its own energy at the touch of the button. No batteries required, so no batteries that let you go at the wrong time. 2 BUILT-IN USB-C FAST CHARGE PORTS - The receiver is much more than a doorbell: With two USB-C ports (up to 35W each), you can charge your phone or tablet directly, without using an extra socket. 64 MELODIES AND 5 VOLUME LEVELS - Choose from no less than 64 ringtones and adjust the volume up to 100dB. Your doorbell sounds exactly the way you want it, from a discreet sound at home to a sound that is well heard in a big house. RELIABLE RANGE UP TO 200M - Thanks to the interference-free 433.92MHz signal, this doorbell works perfectly even in well-insulated homes with a range of up to 200m in open space. Weatherproof bell button (IP56) - The doorbell button is waterproof and can therefore stay outside next to the front door, even when it rains. INSTALLED IN MINUTES - The doorbell button and receiver are already paired at the factory. Plug in the receiver, fix the button with screws or tape, and you're done.