Since your request was cut off at "D...", this feature covers and other critical components starting with "D," such as Design and Planning (Part 14) . 🌬️ EN 54-27: Duct Smoke Detectors

The series is the mandatory European standard for fire detection and fire alarm systems , ensuring that life-safety equipment is reliable, compatible, and effective across the EU.

: Strategies for choosing detector types (e.g., heat vs. smoke) based on the environment (e.g., kitchens vs. bedrooms).

: Guidelines for how far apart detectors should be placed to avoid "dead zones".

While many parts cover hardware, Part 14 provides the for the entire system.