An alarm appears on the Alarms page and in the bell at the top. It also colours the cell's tile in the zone. Most alarms explain themselves; these are the ones you will meet.
An alarm never blocks a cell
A cell with an alarm still works for people. The alarm is a message to you.
A lock that is jammed, or a cell that lost power or its connection.
What to do
Try the cell once more. If it still does not open, open a ticket in Support and name the cell. Only a person with permission can clear this alarm: press Resolve when it is fixed.
The lock is out of range of the station, has no battery, or is switched off.
What to do
Check the lock's batteries and touch its keypad to wake it. If it stays silent, report it in Support. The alarm clears by itself when the lock is heard again.
Everyone in your organisation whose role can see alarms gets a notification in the bell. If IMBox has switched email notifications on, they also get an email with the station, the cell and a link.