... used for linearity and non-linearity test and it can display both direct and relative test of optical power.This meter ... (FC, ST, SC, LC)13) Handheld, large LCD backlight display, easy-to-use3. Specifications Wavelength range (nm)800~1700Detector typeInGaAsStandard wavelength(nm ... lithium batteryBattery working duration(h)No less than 75 (according to battery volume)Auto power off time (min)10 Products ...