SIMATIC WinCC RT Client Upgrade from V7.4 to V7.5 SP2 for WinCC RT Clients O. RT 128, runtime software on DVD, single license, license key on USB stick * Contents: Set (2x DVD + 1x USB) With SIMATIC WinCC you can implement systems in all industries and technologies and easily expand or modernize them functionally or industry-specifically using options or add-ons. WinCC/RT Client V7.4 ... V7.5