Anti-ligature Full-door Alarm
Don’t Stop at the Top
Whole-door sensing. Greater protection.
Safehinge Primera’s Full Door Ligature Alarm is the world’s first and only system that turns the entire door into a weighing scale, detecting vertical loads across every surface. Designed for mental health and other high-risk environments, it provides complete protection around hinges, handles and vision panels.
By detecting ligature attempts in real time, it alerts staff immediately so they can act quickly to prevent harm. Built to learn from real-world use, it delivers greater accuracy each day through intelligent software updates and ongoing support.
From installation through to aftercare, we are with you every step of the way, ensuring dependable performance and peace of mind wherever safety matters most.
49% of inpatient suicides within mental health facilities use the door or door hardware – door safety in mental health facilities is essential.
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Product Information
Together we design for good
We help protect people through vulnerable times
Anti-ligature door alarms exist to protect individuals at risk of self-harm or suicide, particularly those who may be under supervision or care in mental health facilities or any other environment where ligature risks may be present.
We designed the alarms with patient and staff safety in mind, and they comply with safety regulations and guidelines to ensure their effectiveness and reliability in preventing ligature incidents. Read about the meaning of Anti-Ligature design in Mental Health environments.
We have installed our Full-Door Anti-ligature Alarm in 1,500+ mental health bedrooms.
5,700+ Mental health doors fitted with no reported suicides.
Benefits of full door ligature alarm
Key features of full-door ligature alarm
- Addresses ligature risk at all heights – not just the top, like other door-top alarms
- Discreetly built-in to the door, minimising ligature learning opportunities
- Filters out false alarms
- Integrates with staff attack systems
- Wireless system with minimal infrastructure, causing less disruption to live wards
- A unique online monitoring system supports clinical observations by sending staff real-time updates on the status of all alarms from any internet-connected device.
Full-door ligature alarms provide enhanced safety, early warning, deterrence, and customisation options and facilitate compliance with regulations in environments with a risk of self-harm or suicide attempts.
The online monitoring system, single source supply and installation, and integration with existing safety measures further enhance their effectiveness in providing comprehensive ligature detection and minimising ligature risk factors.
Unique Online Monitoring System
The Full-door ligature alarm has a staff dashboard system that allows estates, trusts teams, maintenance, and clinical teams to monitor all doors where the alarm is installed efficiently.
This includes real-time updates on all alarms’ status, weekly testing prompts, and low-battery notifications, providing increased peace of mind and efficient monitoring.
Webinar: Solving the biggest ligature risk
- Research and feedback demonstrating the need for full-door ligature detection
- Key considerations when selecting a ligature detection system
- Mental health care providers who are saving lives with the integration of the full-door ligature alarm
- Watch the recording HERE
Featured projects with full-door ligature alarm

The purpose built psychiatric intensive care unit (PICU) was designed to help patients with complex mental health needs recover in a safe therapeutic environment, which is closer to home in Devon.
Russel Clinic
Alongside The Junipers PICU and Jasmine Lodge MBU, Russell Clinic makes up one of the varying inpatient wards which have rolled out the full door alarm on the Wonford House site in Exeter.
Sowenna CAMHS
Sowenna, the first of its kind for Cornwall Partnership NHS FT, is a child and adolescent mental health (CAMHS) unit, providing inpatient treatment for young people aged between 13 and 18 years.


