Telecom Maintenance,CCTV Maintenance; Comprehensive cable construction system,Optical instruments research and development; Optical communication education and lab testing; Other optical project This type of Handheld optical power meter is a compact and an easy-to-use testing instrument for optical fiber networks, which can be used for absolute optical power measurements as well as for relative loss measurements in optical fibers. Supports 6 wavelength Testing, Auto-off function, with Backlight, self calibration 48 hours super long standby time; simple interface ; support sc/fc/ interface; working hour over 8 hours without charging., Manufacturer: PokFhgur