The power button is a round or square button that powers an electronic device on and off . Nearly all electronic devices have power buttons or power switches. Typically, the device powers on when a user presses the button and powers off when they press it again. Specifications: Origin: CN(Origin) Certification: ce Certification: CCC Voltage: 220V Item Type: Switches Model Number: NP2-BA3311/NP2-BA4322 Switch Type: Push Button Switch Package Includes: 1 x Chint Power Switch Button NP2-BA3311/NP2-BA4322 220V