In order to control your chainhoist an external controller is necessary. Both controllers can control each chainhoist individually or simultaneously simple by putting the switch in the desired position. The controller has a safe emergency button with keylock in order to prevent unauthorised use of the controller and of hoists. The frontpanel for both controllers is identical. The controller for the direct control controller has 4 CEE 4 pole 16A connectors on the backside. The 110V controller has an additional 4 CEE 4 pole 16A connectors for the 110V control connections.