Siemens UL 1066 Operating Instructions Manual page 174

Offline mode
All circuit breaker parameters can be entered and saved on a laptop, for example, without the need to communicate with the circuit breaker.
When the connection to the circuit breaker is established, these data can be transmitted and the circuit breaker can be parameterized auto-
matically.
(1) Browser-capable input/output device (e.g. laptop computer)
(2) BDA or BDA PLUS
(3) 24 V DC voltage supply (class 2)
(4) RS232 interface
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