Feature:1. Quick Locate: The Phone line tester locates breakpoints easily and quickly without opening the cover of the wire, with enhanced cable types and a wide range of functions.2. Continuity Function: Check cable continuity function, complete detection of network cable sequence, short circuit, circuit, error, reverse.3. Trace Line: Cable tracer traces RJ11, RJ45, cable or other metal lines (through adapters), and is an essential test tool for communication engineers, wiring engineers, and network maintenance personnel.4. Check Status: Check the status of the telephone line, test the working status of the telephone line (idling, ringing, offline), and judge the prompt and line.5. Multifunctional: The Cable tester is a multifunctional handheld cable testing tool with reinforced cable types and multiple functions for a wide range of applications.Specification:Item Type: Network Cable Tester RJ45Material: ABSOperating Temperature: 0C to 40C, Maximum Relative Humidity 80% (Non Condensing)Storage temperature: minus10 to 50C, Maximum Relative Humidity 80% (Non Condensing, Battery Not Included)Height: < 2000 MetersExplosionproof Grade: IP 40Transmission Signal Distance: About 300 MetersBattery Specifications:Transmitter: 1 Section 6f22/9v (Not Included)Receiver: 1 Section 6f22/9v (Not Included).Package List:1 x Receiver1 x Transmitter1 x Network Cable1 x Crocodilian Clip Cable Adapter1 x User Manual