Contactless, free from contagious disease spread. The switch responds agilely and quickly. IP-55 industrial protection level. Stainless steel plate, very durable to use. Suitable for doors, gates, or other exit automation control systems. This exit button widely used in the door access control system. When you want to go out, you just need to put your hand near the button and move, then the button will induction you and open the door. No need to Contact the button, very convenient. LED indication. Output Contact: NO/NC/COM Mechanical Life: 500000 tests Suitable Humidity: 0-95% (relative humidity) Detection range: 01-10cm LED Indicator: White LED indicator: OFF Blue LED indicator: ON (standby) Red LED indicator: ON (sensation) Specifications: Working Voltage: DC 12V Current: 3A Times: 500,000 Colour:Silver Material:stainless steel Size:86 x 86 x 39mm Package Contents: 1 x Infrared Door Exit switch Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.