The ECL-210 is an electronically tunable external-cavity laser. The 19 in. rack houses up to 8 channels and allows for full control through either the GPIB or RS-232 interfaces. The ECL-210 has a full 80-nm tuning range and covers all DWDM system wavelengths between 1460 and 1640 nm. The tuning range is complemented by output power up to 10 mW and wavelength and power stability of better than 0.01 nm and 0.01 dB, respectively. The ECL-210 is suitable for both research laboratories and production and installation environments.