... ) OMRON accessory 5) OEM acceptable 1. Top advantage: 1). Micro-switch inside elevator button, is imported from OMRON (Japan), which is ... stannum, international standard.3). LED lamp, there are 4 PCS of LED lamp inside to light up, the LED is made and supplied ... , so could ensure quality by ourselves, instead of usually buying LED directly from domestic electronic shop. 2. Product Features 1)Concave ...