Check the listing for details. Fluke 724 725 726 Serial Calibration & Control Cable (1556747 Replacement). Condition: New. Listed at 165.00 USD. Serial Calibration & Control Cable for Fluke 724, 725, 726 Meters Designed as a replacement for the Fluke 1556747 cable, we engineered this product with the same quality and ingenuity as our other replacement Fluke items. This cable is necessary for calibration of Fluke 724 meters and may also be used with the 725 and 726 models as well. Connection is simple and straightforward. Simply plug the header end into the meter's 10-pin control port located in the battery compartment, and the other end into the host PC or calibrator. The meter end can only be inserted one way; there is no possibility of incorrect connection. Specifications: Host Connector: standard DB-9 female serial port plugMeter Connector: 10-pin header socketCable Length: approximately 60"Warranty: LIFETIME Package contents includes cable, connection instructions, and command set reference.