| Answer | Crossword Clue |
|---|---|
| ROPELINES | Crowd-control devices |
| STOPLIGHTS | Traffic control devices |
| DIKES | Flood control devices |
| FLYSWATTERS | Pest control devices |
| HEATPUMPS | Temperature control devices |
| SENSORS | Temperature-control devices |
| RADARS | Control tower devices |
| RADARS | Devices in control towers |
| RADARS | Air traffic control devices |
| FADERS | Volume control devices, in recording |
| FADERS | Volume-control devices, in recording |
