Ermenrich NetGeeks NU30 is an optical multimeter with visual fault finding (VFL) function, which is an essential tool for professionals involved in the design, laying and installation of fiber optic communication lines. The device can be used to measure the output power of a fiber optic system source, measure the optical power loss of a cable, and detect and locate breaks. The device is suitable for both home and professional use.

The device supports six wavelengths and has FC, SC and ST connectors. To measure the reduction more precisely, it is possible to set a reference level: This allows the difference between the power of the input signal and the output signal to be calculated automatically. A visual fault finding (VFL) function with pulse and continuous mode is available. This is used to identify broken cables or to locate a specific cable. When the function is activated, the device starts working in transmitter mode at a wavelength of 650 nm. If an error is detected, it is indicated by a red light.

The device is compact and easy to use. The device works with three standard batteries.

- Performance measurement: absolute and relative (losses)
- Selectable measurement units, the possibility of setting a reference level
- Supports six wavelengths, three connector types: FC, SC and ST
- Visual debugger (VFL function)
- Works with battery; automatic power off function

The set includes:

- Beacon
- Carry bag
- Cotton swabs
- User manual and warranty card