Detailed Description  Application : Stainless steel keyboards with an attractive appearance, designed to be integrated. Especially suited for use by the general public, they offer an efficient solution against vandalism and other titleerations. The shallow key stroke enables fast data input, avoids damaging the keys (pulling out) and facilitates maintenance.  Characteristics : Number of keys : 66 Trackball size:36mm Pleasant touch sensation  Tightness : IP65 protection Resistant : to vandalism - to bumps - to vibrations Laser etching  Lifespan of keys : approximately 20 million operations Dimensions : 36 x 105 mm (with 400 x 120 mm base) Working temperature : -20° to +70°C Interfaces (keyboard /trackball ): PS2/PS2 CE,FCC,RoHS approved Competitive prices with prompt delivery