NK280 OPM/OPM&VFL Multi Meterproducts use high sensitivity detector, single chip microprocessor control.The body shape is novel, the design meets the requirements of human body function, which is beautiful and durable. Opti cal Power Meter and Visible Fault Location adopt embedded detector and laser， which can be well protected. Optical Power Meter, RJ45 Sequence and flashlight are standard configura tion.Visible Fault Location、RJ45 Track ing and Bluetooth are optional. They are mainly used for continuous optical signal power measurement, optical fiber link loss test and optical fiber line on-off test. They are widely used in optical cable construction and maintenance, optical fiber communication, optical cable sensing, optical CATV and other fields.