USP SecNET card access and YTMS Pro time attendance
Nitro Solution (nitrosec.com) builds card door-access controllers and time-attendance software for sites that want stable Wiegand hardware rather than face terminals. Swan CCTV supplies and installs USP SecNET with the NAC8000N network controller, YTMS Pro attendance reports, NAC3000B standalone doors and NR-series readers. Hong Kong catalogues also list NAC3550N (paired with the NAC8000N) and the NAC3001B-EM control module — we confirm those two against the current datasheet before quoting capacity.

Door-access and time-attendance software for Nitro NAC controllers.
Best for: Offices that want cards and attendance on one PC

Attendance reports that sit beside USP SecNET door control.
Best for: Factories and offices that need shift reports

Four-reader network controller — 2,000 cardholders and up to 64 panels on SecNET.
Best for: Multi-reader floors and multi-controller sites

Standalone Nitro controller for one door that does not need a SecNET PC.
Best for: Single shop or unit doors

NR-series smart card reader for Nitro NAC doors.
Best for: Entry readers on SecNET doors
Quick side-by-side view to help choose the right model family for your site.
| Spec | USP SecNET | YTMS Pro | NAC8000N | NAC3000B-3A | NR-CRD |
|---|---|---|---|---|---|
| Type | Access software | Attendance software | 4-reader network panel | Standalone controller | Smart card reader |
| Cardholders | Via NAC8000N | Reports only | 2,000 | Local on the panel | — |
| Doors | Up to 64 controllers | — | 4 readers | Single door | 1 reader |
| Wiegand | Host | — | 26/32/34/64/66 auto | Controller-dependent | To the NAC panel |
| Best for | Networked site | Shift reports | Multi-reader floor | One shop door | Reader head |