Using the Simpson Harmony Oven Select Switch is easy. Just install it in your compatible oven according to the standard installation steps. When using, simply turn the switch to select the desired oven function. Make sure your oven is turned off before installation to avoid electrical hazards. Note that there are other switches that look similar, so always double - check the compatibility with your oven model. For maintenance, keep the switch clean and dry. If you notice any issues like loose connections or abnormal function, contact a professional technician for repair. We've been in the appliance parts business for over 25 years, so you can rely on the quality of this switch.