Finally the status light turned green, and the sergeant opened the hatch.

The status lights on the control panel told her it was locked.

Finally Matt closed it again, on the off chance that some status light might attract attention.

The status light on the keypad shifted from red to green.

A series of status lights turned green before him.

The status lights on every unit indicated the full system had shut down.

The status light went from green to red to blank.

The status light changed to green, and more greens appeared lower down on the panel.

But its status lights had stopped blinking, and nothing he did made any difference.

The status light over each changed from red to green.