White Membrane Panel Mount Keyboard With Optical Trackball

White Membrane Panel Mount Keyboard With Optical Trackball Special Features: 1. 107 keys IP65 dynamic keyboard with IP68 optical trackball,numeric keypad and function keys. 2. With gold-on-gold metal dome key switch technology with 0.45mm short stroke with tactile feeling. 3. Durable industrial membrane keyboard with Scrachproof,waterproof,anti-microbial etc. 4. Clean key for easy cleaning via lock/disable the keyboard without needing to take the keyboard from PC. 5. Working