How does the crane pendant work?

1
H ow does a crane pendant work?
A crane may be operated by an operator seated in
a cab and guided by a person on the ground or it
may be controlled from the ground using a
push-button or lever control. This control unit
may be wired to the crane itself or as in the
case of many contemporary cranes it may be a
remote radio unit. A wired push button pendant
that is connected to the hoist and dangles down
from the overhead crane is used by an operator to
control the crane. The operator walks alongside
the crane as it traverses the runway. He can
control the lifting and lower of the load using
the pendant. Until about a decade ago, all
overhead cranes were operated by wired pendant
controls.
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