Tk-Pm300 Portable Durable Handhold Fiber Optical Powermeter

. Wave ID Auto wavelength identification & switching . Frequency ID ---Auto frequency identification . 2 types of backlight modes, manual or outside light intensity, which indicated by LED light red or blue color. . Intelligent backlight . 1000 records storage or download via USB cable . USB communication port for saved testing records download . Reference power level can be set up and stored . User self-calibrating function . Auto-off function . Up to 240hrs batteTK life