Designed to meet MIL-STD-461 standards, iKey's SlimKey SLK-102-461 is ideal for harsh environments where electromagnetic interference is a top concern. In addition the SLK-102-461 provides full-size versatility in a rugged, compact design, with the added convenience of an integrated Force Sensing Resistor. The iKey's SlimKey SLK-102-461 is engineered to meet NEMA 4X specifications, and is resistant to sand, debris and the elements. The large numeric pad on the SLK-102-461 allows for easy data entry, while the robust polycarbonate case is durable in the roughest of environments. Other features also include red LED backlit keys for night-time use.