# Activate Lock by IO

Lock by IO is an advanced setting for using a digital output instead of Open Protocol for enabling and disabling the tool. The digital output is integrated in the power connector, see also Power supply for IO pin overview.

There are no Software limitations for Power Focus 4000.

Power Focus 6000 Software version 3.0 or higher is needed to activate Lock by IO in the ILT Base Station.

In Power Focus 6000, activate the setting Lock tool active low. See also the Power Focus 6000 Configuration Guide.

1. On the Home screen, select Configuration, and then select a Virtual Station.

2. Select Controller settings and select the check box to activate Lock by IO.