Features:Emitter Testing Function: including cable continuity testing, cable length measurement, cable scan, and PoE test.Three Scan Modes Switchable: it has digital mode, analog and PoE mode for options to track cable.PSE Type Distinguish: identify the type of PSE, it is AF or AT standard.POE Test Range: test the information of the DC5~60V standard / non-standard PoE device.Non-contact Voltage Detecting: the receiver can be used to detect the AC voltage of household electrical wiring.Illuminate Function: both the emitter and the receiver designed with lamp for auxiliary lighting up the working areas during operation.Other Settings: backlight time(15s/30s/60s/on/off), auto-off time(15mins/30mins/1h/off), contrast adjustment and version checking.