... ) have some feature of waterproof ,antifreeze and safety, etc. Extension plug(extension cord plug,extension multi plug) have some feature of waterproof ,antifreeze and ... Socket Rubber/Russian Socket1. Model:0132. Name of article: Schuko Power Socket and plug3. Voltage: 220v~250v4. Frequency: 50/60Hz5. Rated ... Poles: 3P7. Grade: IP44Rubber Industrial Socket, Deutsch/German (schuko) type Extension plug