| North American Industry Classification System (NAICS) |
| 561621 |
Security Systems Services (except Locksmiths) |
| Standard Industrial Classification (SIC) |
| 7382 |
Security Systems Services |
| Product Service Codes (PSC) |
| J063 |
Maint-Rep of Alarm & Signal Systems |
| L063 |
Alarm & Signal Systems |
| N063 |
Alarm & Signal Systems |
| Federal Supply Classification (FSC) |
| 6350 |
Miscellaneous Alarm, Signal, and Security Detection |
NAICS
