Professional Fiber Optic Fault Locator & Identifier - Handheld OTDR Tester for Electricians, Maintenance Workers, Labs & Schools | Perfect for Network Troubleshooting, Cable Installation & Educational Training

Feature:1. Easy and convenient design, no need to change the fixture when testing on the cable, single-mode and multi-mode can be used universally.2. It can identify the signal frequency of 270Hz/1kHz/2kHz, and there will be a buzzer sound when identifying the frequency.3. Equipped with left and right direction lights to display the signal direction and can accurately identify the direction of the fiber. The left direction light is on to indicate that the light source is from right to left.4. Light-weight body, small size, proper button placement, you can easily pick up the test, easy to use and barrier-free5. Automatically shut down after ten minutes of no operation, energy saving and power saving, prolonging the use time.How to Use:1. Press the power button to turn on/off the power of the device.2. Put the optical fiber into the adapter card slot and pull down to tighten the buckle.3. When the optical signal passes through the optical fiber, the LED indicator will light up to indicate the direction of the light source, and the relative power will also be displayed on the display.4. If no light signal passes through the fiber, the LED will light up and the LO will display.5. The fiber identifier can also detect 2KHz, 1KHz and 270Hz modulated audio.6. Press the VFL button, turn on the red light source sw