The latest version of WAVE is always available for download on the WAVE website.
WAVE is free to try - just download and install WAVE for your OS, head to System Administration -> Licenses and press the "Activate Trial License" button (make sure you have an active Internet connection) to get your four 30-day FREE trial licenses. Trial licenses are professional Hanwha VMS licenses and allow unrestricted use during the 30-day trial period.
Refer to this KB article on activating the trial licenses