The Siemens part number 6AV6381-2CA07-2AK4 refers to a SIMATIC WinCC RT Client upgrade—specifically, an upgrade from V6.2 to V7.2 for WinCC RT Clients without RT 128. It’s a runtime software package with a single license, delivered via software and license key download only (no physical media).

License Type: Single license (floating)

Delivery: Digital download only (email address required)

Supported OS: Compatible with systems supported by WinCC V7.2

Languages: German, English, French, Spanish, Italian

Net Weight: Approx. 0.001 kg

Country of Origin: Germany

Lifecycle Status: Discontinued as of October 1, 2019