TRICOM TR-702 Mini Optical Power Meter and red light all-in-one machine series are controlled by single-chip microprocessor but multi-function. It can be well protected by using embedded detectors and lasers. The whole machine has an automatic shutdown function, three red light modes, backlight display, wide test range, and lighting. It is mainly used for continuous optical signal power measurement, optical fiber link loss test and optical fiber line on-off test. It is widely used in optical cable construction and maintenance, optical fiber communication, optical fiber sensing, Optical CATV and other fields