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VSR or ACR are automatically controlled switches that allow the connection of two batteries during charging and isolation when not charging and the current is directed from one of the batteries. When used with battery switches, the VSR helps to maintain a fully charged battery at all times, preventing a "dead" battery and the possibility of being towed at sea.
Specifications are collected from official manufacturer websites. Please verify the specifications before proceeding with your final purchase. If you notice any problem you can report it here.