*Identify CW/270/330/1k/2kHz modulated frequency
*Support 1270nm, 1577nm wavelength test
*Support RJ45 cable sequence, cable tracking
*Support wavelength memory function
*Support backlight display, automatic shutdown
*Support CW/1Hz/2Hz three VFL modes
*700mAh large-capacity lithium battery, Type-C interface, support charging bank power supply or charging