If it needs electricity, a battery or a timer and was manufactured after 1980, it could be vulnerable to Y2K problems. After identifying automatic and computerized systems, write or call the manufacturer and ask if the system or device is year 2000 compliant. If it is compliant, ask for an official letter of confirmation. If it is not compliant, ask the manufacturer for a recommendation on how to make the system compliant or what steps to take to replace the system. If you cannot get a compliance letter from the manufacturer, take steps to fix potential problems.
Time is critical.
Some Y2K problems can appear before the year 2000. Set priorities for fixing your equipment. Upgrade systems to the latest Y2K compliant version. Replace systems with ones that are Y2K compliant. Fix systems to create compliance.