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4QD controllers
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Christmas Holidays

The office will be closed for the Christmas holidays from Friday 19th December until Sunday 29th December. Any orders placed via the website during this period will be processed in the week beginning the 29th December.

Quick Questions and Answers

Our FAQ sheet lists most of the technical information you can possible want, but this is a series of quick questions and answers (with pointers to more detail) which may help some people. The site is now so large and complex that many have difficulty reading, and cannot find the information they want.

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