The SLK-880-FSR exceeds NEMA 4X requirements and is fully-submersible, meeting IP68 specifications. Unique features of the SLK-880-FSR include a conductive plastic case, adjustable green backlighting that is also available in a night vision (NVIS) compatible configuration, and an integrated Interlink Electronics Force Sensing Resistor (FSR) pointing device. Successful drop tests on the keyboard have been completed at 2.0 meters on concrete, and the cable strain relief exceeds 25 pound pull limits. In addition, the SLK-880-FSR is designed to meet MIL-STD-461.