Key benefits Quickly verify the integrity and configuration of twistedpair cables, helping to speed up installations and troubleshooting. Detect common faults on UPT and STP cables, including open circuits, short circuits, miswires, reversals, and split pairs. Locate fault points with the builtin tracking capability, reducing time spent chasing shorts. Receive audio signals on network cables or telephone lines and determine the line state (, ringing, or in use) with a single handheld tool. Handheld, portable design suitable for fieldwork and bench testing. What it does Handheld network cable testing tool for testing the integrity and configuration of twistedpair cables. Checks UPT and STP twistedpair cables for faults such as open circuits, short circuits, miswires, reversals, and split pairs. Determines whether a cable is connected and tracks the cable to identify the location of a short circuit. Receives audio signals on network cables or telephone lines and judges the telephone line state (, ringing, or in use). Key attributes Function: tests twistedpair network cables for integrity and correct configuration; identifies faults and locates short points; analyzes audio signals on cables and lines. Compatibility: supports UPT (UTP) and STP twistedpair cables. Size and form factor: handheld tool designed for portable use in field and onsite work. Performance: provides clear results for quick diagnostics and fault localization. 23 practical use scenarios network installation: verify each cable run is correctly configured and connected, ensuring reliable performance before equipment is mounted. Onsite fault diagnosis: detect and locate faults such as opens, shorts, miswires, reversals, or split pairs to minimize downtime and rework. Telephony and line testing: test network cables and telephone lines for audio signals and determine line state to assess availability and usage (, ringing, or in use). Notes The tool targets twistedpair cables and includes testing for both UPT and STP varieties. It combines connectivity checking, fault detection, fault location, and line status assessment in a single handheld device for streamlined troubleshooting. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.