Electro-muscular constrictor

The electro-muscular constrictor was an item of . It had to be worn around the wrist of a humanoid target, thus giving to him complete control over the hand of the victim, remote-controlled through a box.
He used it on Logopolis, on Nyssa, trying to force her to strangle Adric. (TV: Logopolis)
Category:The Master's devices
Category:Electricity
Category:Wireless technology