B3AL Long Stroke Tactile Switches Omron B3AL Long Stroke Tactile Switches feature high operating force (from 1.96N up to 5.00N) and long life (1 million operations). Long stroke is achieved by using a rubber plunger. The B3AL Series from Omron has an operating temperature of -40°C to +90°C at 60% max. Potential applications include automotive instrument panels, medical equipment, and gaming equipment.