The entire family of RAD models interface with either HAL or Mongoose for digital conversion at the wall. Each converts analog audio to or from 24-bit, 48 kHz digital audio. Standard CAT 5 cable and termination transport four digital audio channels – two channels each direction – as well as power, ground and a communications channel, with status indicators at each RAD, HAL, EXP or Mongoose unit, and Halogen or Tracker software. HAL auto-checks the CAT 5 crimp and verifies audio. All are hot-swappable with 500-foot homerun connections (66% farther than Ethernet). Light sensors dim the RAD indicators in dark rooms. Except for the RAD16, AM1, AM2, and PAGER1, all RADs mount in standard US electrical gang boxes. These RADs are available in white, ivory, or black, with a matched Decora plate cover included.