An input device for controlling an electrical load , the input device comprising: a user interface responsive to user interface events; a communication circuit configured to communicate digital messages; and a control circuit , characterized in that the control circuit is configured to: detect a user interface event at the user interface; determine, based on the user interface event, a message transmission configuration, wherein the message transmission configuration includes a message selected from a group comprising a unicast message and a multicast message, wherein the message transmission configuration comprises the multicast message when the user interface event is determined to be a first event configured to cause an intensity change at the lighting load and a number of multicast messages to be transmitted within a predefined period of time is less than a predefined threshold, and wherein the message transmission configuration comprises the unicast message when the user interface event is determined to be a second event that is configured to cause a smaller intensity change at the lighting load than the first event; and transmit, via the communication circuit, a digital message configured to control the electrical load using the message transmission configuration. a user interface responsive to user interface events; a communication circuit configured to communicate digital messages; and a control circuit , characterized in that the control circuit is configured to: detect a user interface event at the user interface; determine, based on the user interface event, a message transmission configuration, wherein the message transmission configuration includes a message selected from a group comprising a unicast message and a multicast message, wherein the message transmission configuration comprises the multicast message when the user interface event is determined to be a first event configured to cause an intensity change at the lighting load and a number of multicast messages to be transmitted within a predefined period of time is less than a predefined threshold, and wherein the message transmission configuration comprises the unicast message when the user interface event is determined to be a second event that is configured to cause a smaller intensity change at the lighting load than the first event; and transmit, via the communication circuit, a digital message configured to control the electrical load using the message transmission configuration. detect a user interface event at the user interface; determine, based on the user interface event, a message transmission configuration, wherein the message transmission configuration includes a message selected from a group comprising a unicast message and a multicast message, wherein the message transmission configuration comprises the multicast message when the user interface event is determined to be a first event configured to cause an intensity change at the lighting load and a number of multicast messages to be transmitted within a predefined period of time is less than a predefined threshold, and wherein the message transmission configuration comprises the unicast message when the user interface event is determined to be a second event that is configured to cause a smaller intensity change at the lighting load than the first event; and transmit, via the communication circuit, a digital message configured to control the electrical load using the message transmission configuration. <EOS>