Variobot varikabi Manual page 87

Power Supply
In order to put varikabi into operation, the
outer two rows of the breadboard now
have to be supplied with power.
To do this, lead the battery cable with the
two plug-in connections from underneath
through the gap between the bracket and
the battery.
Then insert the contacts of the battery cable
to the positions on the breadboard indicated
below. To avoid a short circuit between the
plugs, leave them in the breadboard and
use the clip connector on the battery to turn
varikabi on and off. For a battery change,
you can pull out the battery sideways.