Using this Fisher & Paykel Dual Hotplate Simmerstat Control is easy. Just install it in your compatible stove or cooktop following the standard installation procedures. When using, simply turn the switch to adjust the heat level for your dual hotplate or split griller. As for safety, always make sure the appliance is unplugged before installation or maintenance. Avoid using it with a damaged cord or switch. For maintenance, keep it clean by wiping it with a dry cloth regularly. If there are any signs of wear or malfunction, contact a professional technician for repair or replacement.