31/29dB, Portable OTDR ONE KEY setup SC/FC connector, 1310nm/1550nm up to 800 curves record LCD, USB port, with ... key design, one- key setup • For Single Mode Fiber Optical (1310nm&1550nm) • Smart portable OTDR, 4’TFT LCD display• 31/29dB ... adapter, SC adapter, CD/software Handheld OTDR with 31/29dB, 1310nm/1550nm