When you want an extremely easy and safe way to connect your heating, it's useful to purchase a relay. A relay ensures that not all voltage is applied to the switch, allowing a small amount of control voltage to switch a larger load. This is ideal for a device that requires a lot of power, such as a heater. You can also use a relay to connect multiple circuits to the same thermostat. If you're not sure whether you need a relay in your situation, you can always get advice from our team of experts. Check in advance which load capacity is required and what the voltage on the contacts is. View our selection of relays to determine which product is suitable for you.