Headphones Operation
The headphones receive two separate channels of audio using an infrared transmitter from the video screen.
Front seat occupants receive some headphone audio coverage to allow them to adjust the headphone volume for the young rear seat occupants that may not be able to do so for themselves.
If no audio is heard after increasing the volume control, verify that the screen is turned on and in the down position and that the channel is not muted and the headphone channel selector switch is on the desired channel. If audio is still not heard, check that fully charged batteries are installed in the headphones.

1. Volume Control
2. Power Button
3. Channel Selection Switch
4. Power Indicator
See also:
Tire Chains
Use only compact chains, or other traction aids that meet
SAE type “Class S” specifications. Chains must be the
proper size for the vehicle, as recommended by the chain
manufacturer.
NOTE:
...
Materials Added To Fuel
All gasoline sold in the United States is required to
contain effective detergent additives. Use of additional
detergents or other additives is not needed under normal
conditions and they would ...
General Information
The Sentry Key system complies with FCC rules part 15
and with RSS-210 of Industry Canada. Operation is
subject to the following conditions:
• This device may not cause harmful interference.
...
