The Universal Garage Door Opener (UGDO) is in the overhead
console. The UGDO has battery voltage at all times. In order to program the
unit, use the hand-held transmitters from one of the following customer
devices:
The UGDO system incorporates rolling code technology. This level of
security performs the following functions:
| • | Prevents anyone from recording the message being sent from the
transmitter to the receiver |
| • | Prevents playing the message back in order to gain access to the
customer's personal property |
Rolling Code refers to the way that information is sent out by the
UGDO and accepted by the receivers. The transmitted signal is scrambled in
a different order upon every transmission. The transmitter and the receiver
keep track of the appropriate order of the transmitted information. When
the signal being sent by the transmitter is not in the order that the receiver
is expecting, the following conditions may occur:
| • | The transmission becomes invalid. |
| • | The system becomes inoperative. |
The UGDO is compatible with most, but not all, types and brands of transmitters.
