closed-circuit television camera
CCTV camera

The closed-circuit cameras couldn't see them if they did this just inside the door.

There must be a closed-circuit camera in the trees somewhere behind.

Then the guard shoved him in front of what must be a closed-circuit camera.

What about the closed-circuit television cameras in all the labs?

There also was an acceptance that, whatever you were doing in public, a closed-circuit television camera might be watching.

His movements inside the room were monitored by a closed-circuit camera.

Mirrors or closed-circuit cameras may be used in these cases to view the whole platform.

The school was the first to have closed-circuit television cameras installed in all classrooms.

He positioned himself outside the door, and for the benefit of the closed-circuit cameras looked through the window occasionally.

There were closed-circuit television cameras above the desk and outside in the street, recording everyone who entered.