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Energy control (RFS 2.1)

Written by Anja Fricker

Updated at March 19th, 2026

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                          • Scope D50

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                              • Locate your distributor or dealer

                                The RFS 2.1 transceiver allows you to change the power outlet of all RFS 2 or RFS 2.1 flash units that are set to the same studio address (in "ST" mode), and to change the output of individual lamp channels (in "LP" mode). The output can be adjusted in 1/10 and full f-stops. ¨

                                 

                                Mode "ST" 

                                • Briefly press the key "" : all the RFS 2 or RFS 2.1 units increase the total energy by 1/10 f-stop 
                                • Briefly press the key  "": all the RFS 2 or RFS 2.1 units reduce the total energy by 1/10 f-stop 
                                • Press the key "" for more than a second: all the RFS 2 or RFS 2.1 units increase the total energy by 1 f-stop 
                                • Press the key ""for more than a second: all the RFS 2 or RFS 2.1 units reduce the total energy by 1 f-stop

                                 

                                Mode "LP" 

                                • Briefly press the key "": The lamp channel indicated increases its total output by 1/10 f-stop 
                                • Briefly press the key  "": The lamp channel indicated reduces its total output by 1/10 f-stop 
                                • Press the key "" for more than a second: The lamp channel indicated increases its total output by 1 f-stop 
                                • Press the key "" for more than a second: The lamp channel indicated reduces its total output by 1 f-stop

                                 

                                 Resetting the device 

                                To reset the device to factory settings, first press and hold the "test" key and then press the "set" key for more than four seconds. This resets the device.

                                resource regulation power management

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