Public Building Lockdown Systems

Protecting People. Enabling Compliance. Delivering Confidence.

What is a Lockdown System?

A lockdown (or invacuation) system is designed to:

• Alert occupants to remain inside and secure the building

• Provide clear voice instructions, avoiding confusion with fire alarms

• Enable rapid, coordinated response to external or internal threats

Unlike traditional fire alarm tones, these modern systems utilise:

• Voice alarm technology

• Pre-recorded or live messaging

• Zoned communication capability

This ensures occupants can instantly differentiate between evacuation and lockdown scenarios, which is a critical requirement under current guidance.

Why Lockdown Systems Are Now Essential

Legislative Drivers

• Introduction of Martyn’s Law (Protect Duty)

• Increasing focus on counter-terrorism preparedness

• Government prioritisation of schools and public spaces

Compliance Timeline

• Schools currently have an approximate two-year window to align with expected standards

• Wider rollout anticipated across:

  • Leisure centres

  • Libraries

  • Places of worship

  • Community venues

Our Solution: Voice-Based Lockdown Systems

DH Group delivers next-generation lockdown systems using trusted technology we are a recognised leader in life safety systems.

Key Features

• Voice Alarm Integration
  Clear spoken instructions to eliminate ambiguity

• Zoned Messaging
  Targeted communication for specific areas within a building

• Scalable Architecture
  Suitable for single-site schools through to multi-building estates

• Future-Proof Design
  Built in line with emerging UK standards and FIA guidance