The Metcal DX9010 Finger Switch Assembly for DX Series Dispensers is designed to be used when hand held actuation is more convenient than the standard foot switch included with the TS Series dispensers and controllers. All Techcon Systems 700 Series syringe barrels fit the DX9010 and the easy turn clamping mechanism simplifies installation and removal of syringe barrels. The DX9010 requires only 5 oz. (1.39 N) of force to actuate and has a total switch travel of 0.050" (1.3mm).