... 3) Stainless steel surface 4) OMRON accessory 5) OEM acceptable 1. Top advantage: 1). Micro-switch inside elevator button, is imported from ... wire, plating stannum, international standard.3). LED lamp, there are 4 PCS of LED lamp inside to light up, the LED ... with comfortable sense, 3)Using special fittings, easy for installation 4)Suitable for 2-3mm faceplate 5)Long lifespan and high ...