This is a touch switch with blue backlight for access control system, when the button on standby condition the backlight is blue, if there are insufficient light you can accurately find the position of the switch, when touch the switch the backlight becomes red then the door open. touch out switch Dimensions: length 86x width 86x 25 (mm) Input voltage: DC12V Standard structure: organic glass touch trigger Electrical performance: 3A@12VDC Contact output: NO/NC/COM contact Durable test: five hundred thousand aging test qualified Application: apply to all kinds of gate frame Applicable temperature: -20 ~ +50 Applicable humidity: 95% ~ 0 (relative humidity) Trigger device: touch LED Indicator Status: The circular indicator light is white: power off state Round indicator light blue: power status The circular indicator light is green: the state of the power is induced Product weight: 0.105kg Package Content: 1 x Door Switch Button 1 x Wiring and Instruction 2 x Screws