Plug in marine Galvanic Isolator : Simply plug it in to protect your boat! No wiring needed. Over 30,000 UK boats are now reliably protected by Safeshore marine advanced galvanic isolators!

I have this fitted to the electrical inlet point on our narrowboat for times when we are connected to mains electricity via shore power. It is compact and weather sealed. It can be screwed/bolted to a bulkhead if need be, but as we now rarely connect to shore power I just remove it when cruising or on solar power. Well made and durable. It’s one of those items that you trust on the basis of science, because you’ll only see the damaging effects of electrolysis on your hull over time if it ISN’T working as it should.

This bit of kit appears well made. It was a doddle to connect and only time will tell if it does the job of saving corrosion on my boat metal fittings. I have no doubt it will.

Seems to work, delivered as requested. One thing, could do with a way of fixing it to the wall (without dismantling). Minimal faffing about, just plug and go.