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 securely fixed in any desired position, enabling easy DIY installation. Application scope: This product can be used as a trigger response switch in automobiles, boats, 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 items are not included. Light reflection and differences in display screens may cause slight variations in the color of the item shown in the picture compared to the actual product. Measurement error is +/- 1-3cm.