The Sentinel Defender range of cable crossovers lead the market in Europe. The European market has not seen an influx of low quality Chinese brands flood the market because they do not meet the more stringent European standards and are, therefore, banned from sale. As a result, Sentinel has maintained its status as the biggest selling brand in Europe. These cable crossovers are high quality, long-life cable protectors that receive rave reviews from DQ customers. They have been distributing the Sentinel brand since 2007.