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This review is from: Ring RMS2 - 2 Way Cigar Lighter Splitter / Doubler with Battery Analyser (Electronics)
This product was purchased solely for the splitter function and it works perfectly in this role and easy to use. However, the battery check function shows low battery level with engine switched off even with a perfectly good battery (more than one car). It shows all OK when engine started. So basic function OK but not perfect.
(1 customer review)