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tado° Quattro Pack /SRT-4 - four smart radiator thermostats If the tado° Smart Kit is to unfold its full potential to optimize the home climate while reducing heating costs, the Quattro Pack with four smart radiator thermostats is the appropriate solution. Intelligent temperature control can thus be extended to several rooms in the house. The smart radiator thermostats can be fitted to all common radiators using the supplied adapters and replace traditional radiator thermostats. The smart radiator thermostats communicate via radio with the separately available extension kit, which allows energy consumption to be further reduced by accessing the main heating, as well as with the Internet bridge, which provides the Internet connection via the router. The tado° smartphone app enables the individual room temperature to be regulated remotely, actively or automatically, using various information, such as the location of the inhabitant, the weather forecast, the opening of the windows, a schedule or room-by-room regulation. The ideal time to aerate can be found using outdoor air quality data (including pollen count). Siri, Amazon Echo and Google Assistant enable convenient voice control on the spot. Thanks to IFTTT, it is possible to create scenes based on events in combination with other elements of home automation. Functions/compatibility - integrable in tado° V2/V3/V3 starter kits - detection of temperature, humidity, ambient light via sensors - control by mechanical wheel - usable with many valves - possible integration in Apple HomeKit, Google Assistant, Amazon Alexa, IFTTT - Apps (free, including updates): compatible from iOS 10, Android 5 and higher Technical data - Scope of delivery: 4 tado° smart radiator thermostats, 4 x 2 AA batteries, 4 sets of adapters - Power supply: 3.0 V DC - Display: LED display - Smart radiator thermostat weight: 183g each - Radio link: 868 MHz, Mesh (6LoWPAN) - Data encryption: TLS 1.2 ( SSL), 2048-bit Extended Validation Certificate/TLS 1.2 (SSL), 256-bit with elliptic curves/AES-CCM - Languages: German, English, French, Italian, Spanish, Dutch - Certification: ISO 14001, ISO 9001, BS OHSAS 18001, EU RoHS, Packaging Directive.