16 amp Interlocked socket Interlock - Prevents the unit from being switched on if a plug is not inserted 220 - 250 Volt - Commonly Used With Single Phase Caravans, Camper Vans, Tents, Camping Sites Etc This socket will only accept a matching 16 amp 220 - 250 volt blue 3 pin plug, no other type of plug can be inserted.
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