* Standard of IEC, Bell core
* Compact and simple structure, light weight
* Stable Performance 1310&1550±25nm is available
* Low attenuation error, high return loss
* Attenuation Accuracy: +/-0.5(1-10) +/-1.0(11-30)
* Operating Wavelength: SM:1310nm, 1550nm
* Polarization dependent loss: Less than 0.2dB
* Maximum Optical Input Power: 200mW