Features: 1.Directly connected to standard POE and non?standard POE, the side switch can adjust the sensitivity (volume). 2.When the crystal plug of the network cable is completed, the cable finder can be used to test the network cable connection. 3.This instrument is a multifunctional hand-held cable testing tool. It works perfectly when connected to the rj11 rj45 cable. 4.With enhanced cable types and multiple functions, it has a wide range of applications. 5.A necessary testing tool for telecommunication engineering, wiring engineering and network maintenance personnel. 6.This product has a flashlight function, which is convenient for finding lines in dark areas and is easy to use. specification:Item Type: Line Locator Support Cable Types: 4P/8P network cable, telephone cable, BNC cable, single wire, optical fiber Maximum Test Distance> Approx. 200meter / 656.2ft Maximum Scanning Distance> Approx. 300meter / 984.3ft Signal Frequency: 455Khz Battery Type: 2 x 9V 6f22 (not included) Transmitter Maximum Withstand Voltage: 60V The Highest Withstand Voltage of Receiver: 9V Maximum Power Consumption of Ejector: 0.15W Maximum Receiver Power Consumption: 0.2W Fiber Power: 5mW Environmental Working Temperature: 0-55 Relative Humidity: 10%-90% (no condensation) Storage Temperature: -10-60 Relative Humidity: 5%-90% (no condensation) PackageList: 1 x Transmitter 1 x Receiver 1 x Adapter Cable 1 x Storage Bag