1,EB02 series exit button,Stainless steel Panel. 2,Contactless button DescriptionKey switch Standard Structure: Stainless steel Panel, Steel Button Mechanical Life: 500000 tested Suitable for Door: Hollow Door Operating temp: 10~+55°C(14-131F) Operating Humidity: 0-95% (non- condensing) Panel Material: Stainless steel Panel, Wire Drawing Finished Weight: 0.1kgStandard Packing: Exit Push Button