... testing channels 3.99.999% correct Bench-top optical Power Meter(Dual Channel) JW3201ND is updated version of ... , External Detectors for N1 and N2, RS232 cable, Power supply Adapter, Software CD, Cotton Stick, User ManualOrdering Information ModelDescriptionJW3201N- ... Fiber TipStandard Packages ModelStandard Package ListJW3201N0/N1/N2Bench-top Power MeterMain Unit, External Detectors for N1 and N2, ...