Whale Watermaster Inlet Socket for Microswitched Water SystemWhale Watermaster Inlet Socket for Micro switched Water System The Whale Watermaster ES1000 Inlet For Micro Switched Systems is an external socket, designed to pump water from an outside container into your caravans water system. The Watermaster inlet works in conjunction with Watermaster submersible pumps, a great way to get fresh water into your caravan. The socket inlet is available in an ivory colour with a lift up hinged lid to keep any dirt or