Titled 'Electronic Release' because of the speed of the escape, not the method.  The performer has both wrists securely padlocked into the chains, yet, at any instant, can release one or both hands with ease.  As quickly as the escape is effected, the performer can reverse the situation so that either or both hands are again securely captured. 

This works a treat, the method is ingenious but simple to operate allowing the performer to put full effort into performance.