Under the Regulatory Reform (Fire Safety) Order 2005, it is mandatory to clearly identify non-automatic fire fighting equipment with appropriate signage. The Dry Riser Inlet sign ensures that firefighters can quickly and easily locate dry riser inlets during an emergency, allowing them to efficiently pump water to the required locations within a building. This clear identification is crucial for effective fire safety management, helping to protect lives and property by enabling prompt and accurate response in critical situations.