... 1490nm, 1550nm, 1625nm, six calibrated wavelength.Model: AMeasurement range: -70~+10dBm,calibrated wavelength:850nm,1300nm,1310nm,1490nm,1550nm, ... measurement of optical power when output power changes3. Wide measurement range: it can provide 80dB of optical power ... SC/PC,ST/PC( LC as Optional)Power supply3pcs AAA batteriesDC power supplyOptional accessory which require special orderSupport wide range ...