Features: DFB CHIP DFB 9PIN BOX Package 9PIN BOX Wavelength (1550nm、1567.54nm、1572.89nm、1591nm、1625nm、1634nm、1653nm) Built-in Isolator(single/double stage),TEC,Rth and PD Low threshold current High output power Very low TEC power consumption Very high reliability design Designed for Telcordia-GR468 Applications: HF Gas Detector-1268.5nm/1305nm/1312.5nm H2O Gas Detector-1368.59nm/1383nm/1392nm NH3 Gas Detector-1512nm C2H2 Gas Detector-1532.68nm CO Gas Detector-1567nm CO2 Gas Detector-1580nm CH4 Gas Detector-1653.7nm Other transceivers