ART-12 series handheld optical power meter is a self-developed test instrument which be used for absolute optical power measurement as well as loss relative measurement of fiber optic. It features ingenious appearance, wide range of power measurement, fast test, high accurate test precision, easy-to-use, optional backlight, auto shut down function and universal connector. TK12 is an essential test instrument in Optical Communication, CATV and other Fiber Optic works.