Silicone rubber keypads With epoxy cap and plastic electroplating Available in epoxy coating or paint-sprayed, with colored keys upon request Mechanical properties: Operating temperature: -40 t180 degrees celsius Storage temperature: -55 t250 degrees celsius Operating life: 5 x 105 t3 x 107 cycles Actuation force: 20g t500g Key stroke: 0.3mm t5mm Electrical properties: Contact resistance: < 100 ohms Insulation resistance: > 10m ohms Contact bounce: < 20ms Insulation breakdown: 26kv/mm