... lays Structure 3.Type: Tactile 4.100% function test LED Membrane switch This is a LED embedded membrane switch . A : Structure of ... between 0.06” -0.08". 7. Assembled with SMD, LED, resistors and connectors ,etc. B : Application of menbrane circuit ... good tactility,abrasion resistant,installation and connection convenience. 3T.ightness is good, moisture-proof, dust-proof, waterproof, anti-oil, ...