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In the case of all product reviews, tests and assessments, judgements have been made in the context of the equipment supplied at the time of the review. Any judgements are based upon situations relevant at the time of writing, and comments relating to cost are based upon published prices available from major UK distributors.

Comments are based upon products and systems currently available in the UK market-place. Although some products are available in other parts of the world and may carry similar designations or names, overseas products' specifications may vary due to local laws, regulation and standards.