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Fiber Identifier

/New pattern Optical Fiber Identifier S505

New pattern Optical Fiber Identifier S505

Rugged and easy-to-use.

It can quickly identify the direction of transmitted fiber and detect the presence of signals on optical fibers.

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Optical Fiber Identifier S505 can quickly identify the direction of transmitted fiber and display the relative core power without interrupting the current service. The fiber identifier recognizes modulation like, 270Hz,1KHz and 2KHz with continuous audible tone. There are four adapter heads available: Ø0.25, Ø0.9, Ø2.0 and Ø3.0. This OFI is powered by 2pcs very normal AA batteries.


  • Easy-to-use with “ONE KEY” operation
  • Efficiently identifies the fiber transmission direction and frequency tone (270Hz, 1KHz, 2KHz) with audible warning
  • Displays the relative core power
  • Easy-to-replace adaptor
  • Durable metal housing and quality construction
  • Lower power indication
  • It's easy to carry and loss adaptor can be avoided with new adaptor box


Identified Wavelength Range

800-1700 nm

Identified Signal Type

CW, 270Hz±5%1kHz±5%2kHz±5%

Detector Type

Ø1mm InGaAs 2pcs

Adapter Type

Ø0.25, Ø0.9, Ø2.0, Ø3.0

Signal Direction

Left & Right LED

Singe Direction Test Range

(dBm, CW/0.9mm bare fiber)



Signal Power Test Range

(dBm, CW/0.9mm bare fiber)


Signal Frequency Display (Hz)

270, 1k, 2k

Frequency Test Range

(dBm, Average Value)

Ø0.9, Ø2.0, Ø3.0 

-30~0 (270Hz,1KHz)

-25~0 (2KHz)


-25~0 (1KHz,2KHz)

-20~0 (2KHz)

Insertion Loss (dB, Typical Value)

0.8 (1310nm)

2.5 (1550nm)

Alkaline Battery(V)

2pcs AAA batteries

Operating Temperature (℃)


Storage Temperature (℃)






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