With the Hama thermostats on this page, you can set the temperature in your home per room. Place a Hama thermostat on every radiator, so you save as much energy as possible. Set up schedules, so the buttons control the temperature for you the whole day. The Hama bridge allows you to control the buttons when you're not at home. That's useful if you're home earlier, for example. Choose an expansion if you already use Hama thermostats at home. Otherwise, choose a starter pack. That's because you need 1 bridge for all your radiator knobs.