A receiver is simply plugged into the outlet, in the other receiver 2 x AA batteries are used,
which do not belong finished with the delivery!
The included coin cell battery (CR2032) is used in the transmitter.
You then pressed the transmitter, the previously selected ring tone and the bell will sound lights up.
The ringer volume is set by the receiver.
Transmitter and receiver receiver work perfectly, "sparks" by a massive stone wall.
Due to the ease of use and the volume, this bell is definitely something for the older ones among us.