Group 63 - Alarm, Signal, Security Detection
63 - Alarm, Signal, Security Detection
| PSC | Description
|
| 6310 | Traffic and Transit Signal Systems |
| 6320 | Shipboard Alarm and Signal Systems |
| 6330 | Railroad Signal and Warning Devices |
| 6340 | Aircraft Alarm and Signal Systems |
| 6350 | Miscellaneous Alarm, Signal, and Security Detection Systems |
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