What type of audible indication should all medical gas alarm systems have for each condition monitored?

All medical gas alarm systems must have a cancelable audible indication for each monitored condition to ensure that healthcare personnel can effectively respond to alarms without unnecessary stress or confusion. A cancelable alarm allows responders to silence the alert temporarily while they assess the situation, which can be crucial in a busy medical environment. This feature helps prevent alarm fatigue, where staff may become desensitized to alarms due to their constant activation and the inability to manage them effectively.

In a medical setting, alarms need to communicate critical information clearly and allow for immediate intervention when necessary. The ability to cancel an alarm helps manage workflow and maintain focus on patient care. Other types of audible indications, like those described in the other options, do not inherently provide this essential function of manageability in high-pressure circumstances.