Here the wiring is completed. The wires are joined. The the active wired (brown) is attached to the switch.
On the Switch the Red Tab is the Normally Closed contacts (N/C) and the Green Tab is the Normally Open contacts (N/O).
We are putting the Brown (Active) wire onto the N/C contact points. These allow the power to flow till we hit or stomp on the big red switch button, then cutting the power flow.
To reset the switch back to the On position, we simply rotate the red button in the indicated direction of the arrows on top. Such a simple and very useful device!
When screwing in the bottom plate of the Jiffy Box, there are usually included small rubber feet, which go in the screw holes on the bottom. Put these in to make a neater looking box, and they are non-slip also.
You will notice a bit of empty mains power lead tube sitting on the switch. I did this to prevent the box from breaking when you hit the switch. This tube sits firmly between the bottom plate and switch.