This Door Is Alarmed - Safety Signs by Caledonia Signs

Warn people that opening the door will trigger an alarm system and prevent accidental or unauthorised use of emergency exits, restricted doors, or security-sensitive areas. The sign acts as both a deterrent and a safety measure—alerting people before they act and giving security personnel a chance to respond if the alarm is triggered. It also protects the integrity of emergency routes and sensitive zones.

The sign is particularly useful in settings where specific doors must remain closed unless there’s an emergency, such as fire exits in public buildings, rear doors in retail stores, or access points to secure or hazardous areas. Without clear warning, someone might unintentionally open a door and cause an unnecessary alarm, disruption, or evacuation. The sign helps reduce those incidents by clearly communicating the consequence of opening the door.

These signs are typically installed on emergency exits, stairwell doors, staff-only entrances, and exits in hospitals, schools, airports, retail stores, and industrial facilities. They're often accompanied by an audible alarm system that alerts security staff or triggers a building-wide notification. Clear signage ensures that people are aware of the alarm and can make an informed decision about whether the door should be used.

In summary, “This Door Is Alarmed” signs are a critical part of access control and safety systems. They help prevent unauthorised use, reduce false alarms, and support emergency response protocols. When placed correctly on doors connected to alarm systems, they enhance overall building security and ensure that doors are used appropriately and only when necessary.

Materials Explained

Below is a more detailed description of the materials this particular safety sign is available in. Helping you decide which sign option is most suitable for your application.

Rigid Plastic: This lightweight, gloss white PVC is resistant to weather, moisture, chemicals, and general wear and tear, making it suitable for harsh environments. Its smooth, solid surface allows for crisp printing of text and graphics, enhancing readability and visual impact. Businesses who choose Rigid Plastic signs benefit from fewer replacements and minimal maintenance, making it a practical investment for reliable and effective safety signs.

Self-Adhesive Vinyl: Self-adhesive vinyl is easy to apply and it’s budget-friendly. Its adhesive backing allows for easy application to a variety of surfaces such as glass, metal, plastic, and painted walls, which simplifies installation and reduces setup time. Self-adhesive vinyl provides a clean, professional finish that suits many indoor environments including offices, retail, industrial sites, and vehicles. It is more affordable than many other material types and allows for custom shapes, colours, and graphics.