The S2110P-3105 from Saluki Technology is a Optical Time Domain Reflectometer (OTDR) with Event Dead Zone 1.5 m, Attenuation Dead Zone 8 m, Optical Wavelength 1310 to 1650 nm, Dynamic Range 42 to 45 dB, Pulse Width 3 to 20480 ns. More details for S2110P-3105 can be seen below.