Battery Operated Wireless Doorbell and 50 meter transmission range.
A simple and easy to install battery operated doorbell that includes 16 selectable melodies. With a 50m wireless transmission range, it will cover any distance of your house, apartment or small office. Features a flashing blue LED indicator when the doorbell is pressed and will display when you have low batteries. Double sided tape and mounting hardware included.
Wireless Frequency: 433MHz