Morso EH push button micro switch, two fitted to each Morso eh and both have to be held down by the user to enable the e/h to operate.
*Very Important these are replaced regularly: when the left one is faulty the cutting head jumps backwards on start up, if the right one is faulty the cutting head jumps forwards on start up and If both are faulty the Morso can start cutting all by itself on start up.... or wont work at all
