1998 Cadillac Catera Owner's Manual - Page 126

Universal Transmitter (Option) This transmitter allows you to consolidate functions the of up to three individual hand-held transmitters. It will operate garage doors and gates, or other devices controlled by radio frequency such as home/office lighting systems. The transmitter will learn and transmit the frequencies of most current transmitters and is powered your by vehicle's battery andcharging system. This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.