Quick view Senko Fiber Checker MPO Visible Light Source MSRP: $1,200.00 - $1,896.38 $740.25 - $2,149.47 The MPO Visible Light Source is a useful tool designed for checking individual/all fiber ports or checking the defects of an MPO/MTP arrayed fiber cable. It emits a visible 650nm wavelenght visible red laser light through fiber optic cables, then breaks... Choose Options Choose Options