The S2106P from Saluki Technology is a Optical Time Domain Reflectometer (OTDR) with Event Dead Zone 0.8 to 1 m, Attenuation Dead Zone 6 m, Optical Wavelength 1310 to 16250 nm, Dynamic Range 35 to 38 dB, Pulse Width 3 to 20000 ns. More details for S2106P can be seen below.