iKey Ltd. offers the DU-5K-TPE keyboard, which is manufactured with an extended temperature cirque touchpad that can operate in locations with temperatures ranging from -40 degrees Celsius to 70 degrees Celsius. It features two buttons below the touchpad that serve as left- and right-click mouse buttons. The DU-5K-TPE is fully sealed with an industrial silicone rubber keypad and a lightweight ABS polycarbonate base.