Visionis VIS-7001 Doorbell Type Exit Button for Door Access Control with LED, NC, C and NO Outputs (1) Blue LED Doorbell Exit Button Switch Specifications: 500ma/DC-12V LED Supply Voltage: DC-12V Mechanical life: 200,000 times or more Electrical life: 100,000 times or more Protection class: IP65 Operating stroke: Approximately 2.2 mm Panel thickness: 1~8 mm Shell material: Stainless steel ROHS: Comply with ROHS Total length: &lt; 30 mm Mounting Hole Size: 23 mm Led lifetime: 40000 hours Dimension Of Plate: 114L  69.40W  5.4H mm LED Color: Blue