UT693D handheld optical integrated machine is mainly used for continuous optical signal power measurement, using low-power single-chip microprocessor for control, full-featured, with 10mw red light pen. The product uses a built-in detector to protect it. In addition, it also has IP65 waterproof and dustproof, backlight display, auto power off function, wavelength memory function, user calibration function and ultra wide optical power test range. Widely used in fiber optic cable construction and maintenance, fiber optic communications, fiber optic sensing, optical CATV and other fields.