Visionis VIS-7005 Ultra Thin Request to Exit Button with LED Light for Door Access Control, NC, C and NO Outputs Innovative LED Design 2.5mm or 0.1 Inches ultra-thin, an ideal choice for door access control for office building, households, etc. Long Mechanical Life, exceed 1 million times Simple installation Innovative LED Design 2.5mm or 0.1 Inches ultra-thin, an ideal choice for door access control for office building, households, etc. Long Mechanical Life, exceed 1 million times Simple installation