A lone worker alarm and a man down alarm are similar but not exactly the same. A lone worker alarm is typically used to alert a monitoring center or supervisor when an employee has not checked in or responded to a pre-determined check-in schedule. A man down alarm, on the other hand, is activated when an employee has fallen or is in a prone position and unable to move or communicate. Both types of alarms are designed to provide added safety and security for workers, but they serve different purposes.