product description: NF-8209Sis a new generationto offer digital and analog signaling all in one network toner and probe.It has three modes for options to track cable like digital mode, analog mode and PoE mode. That means its equipped with the most powerful cable location technologies for any work environment.Also, it includes cable length measurement , cable faults testing, PoE testing, hub blink and NCV function, all these makes it a must-tool for cabling engineers. Product Operation1.CONT-- Test open, short, cross,ect for STP, UTP cable.2.Length--measure length of lan cable, range is 2.5m~200m.3.Scan--Analog/Digital/ PoE mode to locate lan cables.4.PoE-- available for standard or non-standard PoE switch (60V), identify AT or AF standard of PSE type. 5.Flash--locatenetwork port by the flashing port light on switch/ router. NF-8209S statement Affected by the epidemic, the global chip is extremelyshortage.The original chip manufacturer of this machinestopped production of this chip on March 31,2021 due toits own reasons.The company has worked hard to look foralternatives.The length measurement range of the existingchip is 2.5 meters to 120 meters,it is different from 2.5 meters to 200 meters marked in the manual, but theoriginal function and measurement accuracy remain unchanged.Hereby declared, subject to the actuallengthmeasurement range of 2.5 meters-120 meters. Features NF-8209S: Three modes of non-interference/normal hunting/POE hunting, 5-60V non-standard/standard POE can be tested, AF/AT identification, network cable length breakpoint test within 120 meters without calibration Earphone accessories have been discontinued due to poor user feedback. Package Include: Transmitter 1pc( battery is not include ) Receiver 1pc Remote 1pc Cable adaptors 1 set Carry bag 1pc User manual 1pc Quality certificate 1pc