The DWA-F01D is an expandable adaptor for digital wireless receivers, designed to fit in mixer bags for ENG / EFP applications requiring top panel operation and the option of stand-alone battery power. The DWA-F01D can be used as a two-channel digital receiver with the DWR-S01D, and as a one-channel analogue receiver with the WRR-855S. The unit is also able to offer DWX digital audio for camcorders that do not feature an integral slot-in feature.