Smoke alarms by regionRegionFlandersBrusselsWalloniaNetherlands (Bbl)Number of occupied floorsNumber of alarms you plan (optional)ResultFlanders: at least 2 smoke alarm(s): in the hall or stairwell and on every occupied floor.Source: SW-S64 Brandveilige woning — minimale vereistenMore explanation: Which smoke alarms are mandatory, and may they be smart?Calculator with general information, not advice or an inspection. Check the source and reference date.