The LCT135 from Tesat-Spacecom GmbH & Co. KG is a Satellite Laser Communication Terminal with a range of up to 80000 km and a dual operational wavelength of 1064-1550 nm. This terminal has a bidirectional data transmission rate of 1.8 Gbps and a power consumption of 120-150 W. It supports LVDS or Wizard link data interfaces. The LCT135 has a mass of 53 Kg and measures 600 x 600 x 700 mm. It has a lifespan of up to 15 years in GEO orbit and is ideal for Gigabit Inter-Satellite Link (ISL) for Data Relay on GEO.