The ARB1606 module is a device that allows to extend the functionality of the DAHUA recorders with additional alarm inputs and outputs. Communication between the unit and the recorder is done using RS-485.
The device is equipped with an address switch, that allows for the connection of up to 4 such modules in a single RS-485 bus.
WARNING! In case of connection 2, or more devices with the same address setting, the connection will not be established. The reverse connection of the RS-485 bus cables will cause a transmission error.
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