Using this Panasonic fridge light and fan switch is easy. Just connect it to your fridge using the three 2.8mm spade connections. Push the button to turn on or off the light and fan. When you're installing it, make sure the power is off to avoid any electrical hazards. As for maintenance, keep it clean and dry. If you notice any issues like the switch not working properly or if there's a strange smell, stop using it right away and contact us. We'll help you figure out what's wrong and get it fixed.