We no longer have any detection devices beyond orbital sensors.

Perhaps you can tell us direct, making possible the avoidance of using further detection devices.

Several detection devices have been designed since those events.

Not even hollow space sensors and all similar detection devices would help.

Keep every possible detection device monitored twenty-four hours a day.

Other detection devices, which are more sensitive and currently under development, could be added later.

The security men entered, weapons and detection devices at the ready.

"Were it not for the fact that we had a new detection device, this would have gone undetected."

The detection devices are a long way from being reliable.

By the 20th century, modern detection devices were brought into the mines under government mandate.