User's Manual

Door Alarm Overview
The Full-door Ligature Alarm has been developed specifically for Mental Health inpatient
environments to alert staff of ligature attempts made on doors.
What Does It Do?
Integrating seamlessly into Safehinge Primera (SHP) bedroom doorsets, the alarm turns the
door into a large ‘weighing scale’ sensing additional weight applied during a ligature attempt.
If a ligature is detected an alarm will sound alerting staff to the emergency.
Which Doors Is It Installed On?
See “Appendix A - Site Details” for a floor plan detailing which doors feature a Door Alarm as
well as Alarm System labels for each Door Alarm.
Ligature Alarms
What Conditions Will Trigger a Ligature Alarm?
The door must be closed (within 8 degrees of the latched position)
Vertical load applied that exceeds trigger threshold
Load above threshold for 5 seconds (up to 15 seconds if door has been closed for 20 secs)
How Does the Alarm Look and Sound?
When a Ligature is detected the Door Alarm will trigger an Alarm through the staff attack
alarm system.
On most systems this will result in an audible alarm and a Room ID displayed on the alarm
panel. Some system configurations may also include Over Door Lights to ease identification
of the correct room.
The Door Alarm will continue to trigger an Alarm every 15 seconds until the door has
been opened fully. You must open the door before cancelling the alarm or it will
continue to re-trigger for up to 3 minutes.
For details on your ward’s specific configuration see “Appendix B - Alarm System Integration
Configuration”.
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