The fiber tester is very simply to operate and easy to read the receiving range , you can understand fully at a glance from indicator. Also it can test fiber optic cable with ST or SC connector.
Specifications

                 1. Fiber Core : 62.5/125
                 2. Output Wavelength850mm+-
                 3. Readout Range :-22dBm to -40dBm
                 4. Readout Resosution : 1dBm
                 5. Power: DC 9V Battery 

Ordering Information:
                 21-8683-00  (ST  TYPE)
                 21-8684-00  (SC  TYPE)