Final answer:
In case of failure concerning alarm equipment, the owner/manager, alarm monitoring companies, and emergency services may be notified.
Step-by-step explanation:
In the context of alarm equipment, there are different parties that may be notified in case of failure. These parties can vary depending on the specific situation and the organization or system handling the alarm equipment. Generally, the owner or manager of the premises where the alarm equipment is installed would be notified, as they are responsible for the overall safety and security of the location. Additionally, alarm monitoring companies or emergency services may also be notified to ensure a prompt response and address any potential danger.