"This is just until I can get you into an environmental control unit."

At the far left of the machine is the control unit.

Here, multiple workers can use the control unit as needed, then do other things.

He pulled out a small black control unit from his pocket.

He was looking down at the control unit in his lap.

All he wanted to do was reach the control unit on his belt.

With a touch of the control unit, Kirk cut the force field.

"I can turn it on and off with the same control unit that locks the door."

It was certainly much better to bring in the control units and let the locals build the things for themselves.

When he'd gotten it all together, he handed the control unit to the woman.