The RR868 is a handy, quick-to-install radio receiver with USB connector that can easily be plugged into the USB port of the DST-24 and makes contact with a radio signal with a frequency of 868MHz. The RR868 can be used with all RDA wireless controls with a frequency of 868MHz. Various functions can easily be controlled via the four DIP switches on the plug-in receiver per button of the handheld transmitter or wireless push button.