A-182-2 is a simple passive module that contains four changeover switches, which are used to connect or disconnect the sockets of the corresponding socket triplet:

in the upper position of the switch the upper socket of the corresponding socket triplet is connected to the center socket

in the lower position of the switch the lower socket of the corresponding socket triplet is connected to the center socket

in the center position of the switch the sockets are not connected

Each unit of the module can be used to switch between two signals or to interrupt/connect a signal. In the last case the third socket of the triplet is not used.
The module is fully passive and both audio or control signals can be switched.