Can the old punch switch be modified?

The old punch switch can be modified. Reconstruction of synchronous control of two-hand buttons of old press (punch). On many machines, due to uncoordinated hands or other reasons, one hand may start the machine while the other hand is in a dangerous area, or on some machines with two hands controlling buttons, because the two buttons cannot control the start of the machine synchronously, individual operators may hold down one button first and operate with only one hand, thus causing safety accidents. The two-hand synchronous control system ensures that the time difference between the two buttons must be within the synchronous control time, beyond which the machine cannot be started.