Lindy 43053, Optical Loss Test Sets (OLTS), RJ-11, RJ-12, RJ-45, Short circuit testing, Black, Blue, Red, Yellow, 135 mm, 50 mm Lindy 43053. Product type: Optical Loss Test Sets (OLTS), Supported connectors: RJ-11, RJ-12, RJ-45, Test type: Short circuit testing. Width: 135 mm, Depth: 50 mm, Height: 215 mm