... Power Meter Specification Model: Handheld Power Meter A--Wavelength: 850nm, 980nm, 1300nm, 1310nm, 1490nm,1550nm,Measurement Range: -70 to +3dBmHandheld Power ... Meter C--Wavelength: 850nm,980nm , 1300nm, 1310nm, 1490nm,1550nm,Measurement Range: -50 to +26dBm 1 ...