Using this Fisher & Paykel Simmerstat Control is easy. Just install it in place of your old switch according to the instructions for your stove or cooktop. When using, simply turn the switch to adjust the heat as you need. Make sure your hands are dry when operating the switch to avoid electrical hazards. For maintenance, keep the switch clean by wiping it with a dry cloth regularly. If you notice any problems like loose connections or strange noises, stop using it immediately and check the connections. Contact us if you can't solve the issue. And always ensure the power is off before any installation or maintenance work.