Trade-up to a DTX-1800 CableAnalyzer™—the most trusted network cabling certification tester—and get a rebate up to $3,500. Purchase an eligible DTX-1800 between January 5, 2012 and June 29, 2012, and trade-in any category 5 or higher (at least 100mhz) cable tester to qualify. Download the trade-in form for complete details.