69 keys IP65 static compact format vandal proof stainless steel industrial keyboard with 38.0mm stainless steel trackball module, industrial metal dome PCB with gold-on-gold key switch technology with short stroke 0.45mm with excellent tactile feeling for stable and accurate data input, 3 mouse buttons designed for right & left clicking and scrolling up and down with ball rolling, stainless steel top plate with threaded bolts for top panel mounting solution.3 optional trackball modules: IP65 static mechanical trackball module with 400 DPI, IP68 dynamic optical trackball module with 800 DPI, IP68 dynamic laser trackball module with 1200 DPI, pls.see below table.
