Feature:1. DYNAMIC CALIBRATION UP TO 97%: Cable length dynamic calibration function has a length measurement accuracy of up to 97%, allowing for single person cable connectivity testing.2. SOUND PROMPT FUNCTION: The remote adapter is paired with sound prompt function, easy to monitor the statues, easy to use.3. INDEPENDENT MEASUREMENT: Measure the length to determine the distance. Length and pairing measurements can be performed with or without the insertion of a remote identifier.4. EASY TO USE: Simple operation together with 1350m test range distance largely simplifies the testing and greatly improves working efficiency.5. EASY CARRYING: Comes with a small size and a lightweight as well, easy to carry the tester around for convenient use.Specification:Item Type: Network Cable TesterMode: SC8108Material: ABSBattery: AA x 4 (shipped without battery)Calibration Accuracy: 5% ( 0.5m or 1.5ft)Test Range: Approx. 1350m / 4429.1ftProduct Function: Detect 5E, 6E coaxial cable and telephone line wiring faults..Package List:1 x Tester 1 x Manual 1 x Accessory