SX503 Optical Power Meter Quick response,universal connector , Wavelength:850,1300,1310,1490,1550, ... 1625nm Dear, Thanks for your nice attention about our SX503 optical power meter, it sell to south America, Austrialia, India and middle ... a ver ygood reputation. HOT----SX503 Handheld Optical Power Meter Description:SX503 Handheld Optical Power Meter is a self-developed test instrument Which is ...