This is an 8-pack of green N.O. momentary SPST pushbuttons, model 302 NCE, with part number 524-302. They have a 1/4 (6.35mm) mounting hole. These pushbuttons are suitable for various applications and are available in all scales.

Using these pushbuttons is easy. Just connect them according to the wiring diagram of your device. When you press the button, it will momentary close the circuit. Remember to install them in a dry and clean environment to avoid damage. For maintenance, you can use a soft cloth to wipe the surface regularly. If you notice any issues, check the connections first. Don't use excessive force when pressing the buttons to prevent breakage.