DUO SMART ref. no. description width height diameter colour size € 70521 control unit 7.5 cm 12 cm grey / green Suitable for various sliding doors and has a versatile use Settings can be adjusted via the Kerbl app even if the mobile device is not connected to the local Wi-Fi network: the control unit must be connected to the Wi-Fi network, but access via smartphone is also possible using mobile data. 70560, 70570, 70580
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