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The Ermenrich Zing TC20 Digital Multimeter is a portable device for measuring DC/AC voltage, DC/AC current, resistance...

Ermenrich NetGeeks NU10 can measure the absolute optical power or relative loss of optical power between two points in t...

The Ermenrich NetGeeks NU20 optical multimeter is designed for testing fiber optic cables. You can measure the absolute...

With this device, you can measure the output power of the fiber optic system source, measure the optical power loss in a...

Optical multimeter, or optical power meter, Ermenrich NetGeeks NU40 – an essential tool for professionals who install an...