tone 130 Alternating tone, UK BS5839-1 (fire alarm) 131 : EN54-3 Alternating tone, UK BS 5839-1 (fire alarm, railway crossing) 135 Alternating tone, UK BS 5839-1 (fire alarm, increased urgency - railway [...] Sweeping 31 Sweeping France NF C 48-265 33 Sweeping (medium), UK BS 5839-1 34 Sweeping (fast) 35 Sweeping (fast), UK BS 5839-1 36 Sweeping 43 Sweeping 44 Sweeping, IMO 3d, Germany KTA 3901 evacuation alarm [...] Sawtooth, DIN tone 33404-3 Germany (emergency signal), PFEER PTAP 9 Slow whoop, fire alarm, UK BS 5839-1 11 Interrupted tone (fast) 13 Interrupted tone 15 Slow whoop, evacuation alarm Netherlands NEN 2575