General description You will never miss a visitor with the AlwaysH Self-generating wireless doorbell. This innovative doorbell features a 200-meter range and a waterproof electronic chime, making it suitable for various environments. The system includes one ring receiver that plugs in and one kinetic transmitter that can be easily installed on your outside door. Technical specifications Frequency: 433MHz RF Range: 200 meters Melodies: 38 different options Volume levels: 4 adjustable settings Installation The plug-in doorbell receiver can be easily plugged into any socket in your home. The waterproof kinetic transmitter can be installed on the outside door without any wiring required. Usage The self-generating transmitter features a small built-in electromagnetic coil that generates a current when pressed, eliminating the need for batteries. Visitors can ring the indoor doorbell remotely by pressing the transmitter installed outside.