Gone are the days when you couldnt tell which bell button had been pressed. A distinction can be made between e.g. front door & back door by using symbols on the bell unit or numbers. This radio bell system allows up to 6 different buttons to be learnt on the receiver & any number of receivers on one button. You can chose between a flashing light, bell sound or flashing light + bell sound for the bell signal. Parallel connection to the existing bell or intercom