K-Line keyboards are robust and durable input devices intended for applications (e.g.factory automation) in mechanically and chemically stressful environments. Omron’s B3F short-travel mechanical keyswitches covered by protective embossed polyester membrane provide a good tactile feedback when typing, as well as a high functional reliability. The front side is resistant to dust, moisture, alcohol, diluted acids, diluted alkalis, esters, hydrocarbons, ketones and household cleaning agents, what makes K-Line keyboards also applicable in hygiene-critical environments.