Model: ITC4005. 1 x ThorLabs ITC4005 Manual. 1 x ThorLabs Key. Laser Diode Current Range: 0 to 5A. Connector for Laser, Photodiode,Interlock, and Laser On Signal:13W3 Mixed D-Sub Jack (female). Connector for Sensor, TE Cooler, TEC On Signal: 17W2 Mixed D-Sub Jack (female).