The UT693D handheld optical all-in-one machine is mainly used for the continuous measurement of optical signal power. It is controlled by a low-power single-chip microprocessor and is fully functional, equipped with a 10mW red laser pointer. The body design conforms to ergonomic requirements and adopts advanced cold plastic molding technology, making it both beautiful and durable. The product uses an internal detector, which can be well protected. In addition, it also has IP65 dust and water resistance, backlight display, automatic shutdown function, wavelength memory function, user calibration function and a wide range of optical power testing. It is widely used in optical cable construction and maintenance, optical fiber communication, optical fiber sensing, optical CATV and other fields.