SecuraKey
SK-NET Version 5.1
Secura Key’s SK-NET Version 5.1, supports the new NOVA.16 sixteen-door control panel, which reduces cabling and installation costs, making system expansion easier. The NOVA.16 uses RS485 to interconnect the new Smart Readers (available with e*Tag or Radio Key technologies), each containing all the inputs and outputs to control and monitor a single door. SK-NET 5.1 is compatible with legacy control panels, allowing SK-NET users to expand their systems using newer terminal types with virtually no learning curve. SK-NET 5.1 works with Microsoft Windows Versions XP or greater.
https://www.securakey.com/SUPPORT/TECHNICAL/DOWNLOADS/SKNET501/Download_Instructions_SKNet5_1.html