10mW Fiber Optic Visual Fault Locator

"CW" means continuous wave，which is used to transmit the laser for a long time to check the loss.

"Glint"  is generally used for reminding the operator,  allowing you to quickly detect the location of the break point.

The distance that can be tested for 8 kilometers is under the circumstance as
1. 25℃ room temperature
2. Using  Ø2.5mm ST/SC/FC connector with multi-mode optical fiber cable. In addition, the light can not even reach 3 kilometers may be because of low battery, bad connector, error cable, etc.

Reminder: If you are testing single-mode fiber, the distance will be reduced by about 1/2. If you use an adapter or test with Ø1.25mm LC connector, each contact will lose 1/5 of the distance.