The diameter of 12MM button switch, IP65. Install Hole size: Φ 12mmRating: 2A/36VDCCombination: 1NOOperation Type: self-returnShell material: brassButton head material: PBTHead color: red, green, yellow, orange, blue, whiteBead color: red, green, yellow, orange, blue, whiteRated voltage: 6/12/24/110/220VLamp life: 50000 hoursProtect degree: IP65 High Strength & Violate Resistance buttom switch