Evan Designs Power Jack for 12v transformer with 4-added switches
This is the same Power Jack meant for use with our 12V 1Amp or 2Amp power adapters OR our 3V 1 Amp or 2 Amp Adapter it fits all of the adapters we sell. We can't say if it will fit the adapter you have if it is not ours.
This is an easy unit to use: the switches are already attached to the power jack. Or get the unit with wires only, no switches. We have them that way as well.
We have power jacks with a variety of switches added. In the above example, there are 5 of the on/off switches attached to the power jack.
The advantage of having a switch added, you do not have to plug/unplug the power, and you can individually control the LEDs in your project.
Multiple switches give more control over the different areas in a project. Consider 1 switch for the first floor one for the second floor. Or 1 switch for the first diorama section, one for the next section, etc.