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1 Euromuenze, WLAN-Heizkoerperthermostat FRITZ! DECT 302, Display zeigt 2oe°C., Detail, Smart Home Technik, Symbolbild, Vernetzung, digital, Energiekosten, steigende Heizkosten, 1 Euro coin, WLAN radiator thermostat FRITZ! DECT 302, display shows 2oe°C., detail, smart home technology, symbol image, networking, digital, energy costs, rising heating costs (KEYSTONE/mauritius images/MANFRED HABEL)