Surface-mounting box6131/39-24-500For Busch-Presence detector KNX and Busch-Watchdog Sky KNX. For installing a Busch-Presence detector KNX 6131/30-xxx(-500) or a Busch-Presence detector premium KNX 6131/31-xxx(-500) or a Busch-Watchdog Sky KNX 6131/40-24(-500).
