... -wavelength precise measurement 2.4 types of adapters (FC, ST, SC, LC) 3.Handled large LCD display Optical Power Meter (ST800K ... Low voltage indication2.7 Applicable to versatile adapters (FC, ST, SC, LC)2.8 Handheld, large LCD backlight display, easy-to ... range(dBm)Connector interfaceST800K-A-50~+26FC,ST,SCST800K-B-50~+26FC,ST,SC,LCST800K-C-70~+3FC,ST,SCST800K-D-70 ...