The button switch operation type of this product is instantaneous. Press and hold the button to turn it on, and release the button to turn it off. Each 12V momentary switch comes with a 30cm cable on one side for easy concealed installation and takes up no space. The back of the momentary push button switch is equipped with strong double-sided tape, which allows it to be fixed in any desired position, enabling easy DIY installation. Application scope: This product can be used as trigger response switches in automobiles, ships, industrial equipment, medical equipment, and home applications. Color: Black Material: Plastic Size: Cable length: 30cm Package Contents: 4 x Momentary push button switches Note: The package includes only the items listed above; other accessories are not included. Light reflection and differences in display screens may cause slight variations between the color of the item in the image and the actual product. Measurement may vary by +/- 1-3cm due to manual measurement.