The heart of the system. One each
is required per system. The U3800 will
accommodate two headsets and should be
placed where radio transmit function is not
required. Adjusts automatically for 12 or 24
VDC power source. Contains system on/off,
master volume control, two headset jacks
with listen level controls, power input
connector and two remote output connectors.
Draws less than 600 milliampere current.