Some burglar alarms have automatic calling capability to notify alarm activation. Although the alarm may have a date and time display it is unlikely that it cease working if there is a problem. If in doubt check with the alarm supplier or maintainer. For business Telecommunications are vital to business. If your business has not looked at its Year 2000 readiness it should do so now.
Some businesses make use of equipment to transmit and receive data.
Again this may require checking for Year 2000 and maintainers, suppliers and manufacturers should be able to provide the necessary information. These systems do contain electronic chips and software and many of them will need to be checked for Year 2000. If you have a maintenance contract check with your maintainer what you need to do. If not check with the supplier of the equipment or the manufacturer. You may need to take action to keep the system working.