Model Name Description
Frequency
Rep. Rate
dBA @ 10'/1m
Preview
TM1 Wail Conventional siren
560-1055Hz
11 cycles/min.
68.8 / 78.8
TM2 Yelp Rapid siren
560-1055Hz
3.3 cycles/sec.
67.6 / 77.6
TM3 Hi-Lo Alternating high and low
Low: 561Hz, High: 760Hz
50 cycles/min.
68.3 / 78.3
TM4 Bell Bell, struck rapidly
801Hz
50 cycles/min.
59.0 / 69.0
TM5 Yeow Descending high to low, repeated
Low: 545Hz, High: 1295Hz
36 cycles/min.
67.8 / 77.8
TM6 Horn Steady horn
470Hz
Continuous
61.0 / 71.0
TM7 Beep Slow intermittent horn
435Hz
60 cycles/min.
59.6 / 69.6
TM8 Stutter Rapid intermittent horn
470Hz
5 cycles/sec.
59.4 / 69.4
TM9 Slow Whoop Slow ascending low to high, repeated
Low: 424Hz, High: 1163Hz
15 cycles/min.
66.5 / 76.5
TM11 Temp. Slow Whoop NFPA coded slow whoop
Low: 500Hz, High: 1200Hz
15 cycles/min.
65.2 / 75.2
TM12 Westminster Chime Westminster chime
Musical tone
1 cycle, 8 notes
63.4 / 73.4
TM13 Evac Amplitude modulated horn
479Hz
4.3 cycles/sec.
61.7 / 71.7
TM14 Air Horn Steady horn
Musical tone
Continuous
66.2 / 76.2
TM15 Chime Single strike chime
600-1200Hz
49 cycles/min.
60.6 / 70.6
TM16 Phaser Rapid siren
600-1200Hz
15 cycles/sec.
63.7 / 73.7
TM17 Alternating Hi-Lo Alternating high and low
Low: 363Hz, High: 518Hz
60 cycles/min.
63.8 / 73.8
TM18 Warble Extremely rapid siren
560-1055Hz
63 cycles/sec.
67.1 / 77.1