All-metal fuselage,CNC highly processed 4 Kinds of chucks. Easy to operate and change; Suitable for 0.25/ 0.9/ 2.0/ 3.0mm fiber Universal for SM & MM fiber Recognizable 2kHz/ 1kHz/ 270Hz signal type with beeping sound Identify dominant signal direction Built-in LED light, convenient for line checking in the dark Configure OPM function, 2.5mm universal interface LED display
