models:
NVR5208-4KS2,NVR5208-8P-4KS2,
NVR5216-16P-4KS2,NVR5216-4KS2,
NVR5216-8P-4KS2,NVR5232-16P-4KS2,
NVR5232-4KS2,NVR5232-8P-4KS2,
NVR5416-16P-4KS2,NVR5416-4KS2,
NVR5432-16P-4KS2,NVR5432-4KS2,
NVR5464-16P-4KS2,NVR5464-4KS2,
NVR5816-16P-4KS2,NVR5816-4KS2,
NVR5832-16P-4KS2,NVR5832-4KS2,
NVR5864-16P-4KS2,NVR5864-4KS2

release note:
Please refer to releas note for detailed information

IVS(2.0)