Sonifex RB-DS2R Remote Switch Panel For RB-DS2The RB DS2R is a remote panel for controlling up to 4 separate RB DS2 units from a single 1U 19" rack mount panel. The unit has 4 rotary switches, each with 8 available selections numbered 0 to 7, used for selecting the delay time in frames. On the rear of the unit are 4 x 15 way D type connectors used for connecting directly to the remote input of 4 x RB DS2 units. The RB DS2R is a passive unit, i. e. there is no power supply.