1st and 2nd Sound

Frequency Rate

Rept. Rate

Switches 12345

Special Application

Tone Sample

1

Alternate two-tone

800-1000

0.5

11111

Fire Alarms

2

Alternate two-tone

2500-3100

0.5

01111

Security Alarms

3

Alternate fast two-tone Alternate fast

800-1000

0.25

10111

Increased Urgency

4

two-tone

2500-3100

0.25

00111

Security Deterrent

5

Alternate two-tone

440-554

0.4/0.1

11011

AFNOR, France

6

Alternate two-tone

430-470

1.0

01011

-

7

Alternate v.fast two-tone

800-1000

0.13

10011

-

8

Alternate v.fast two-tone

2500-3200

0.07

00011

-

9

Alternate two-tone

440-544

2.0

11101

Turn-out, Sweden

10

Continuous note

700

-

01101

All-clear, Sweden

11

Continuous note

1000

-

10101

-

12

Continuous note

1000

-

00101

-

13

Continuous note

2300

-

11001

-

14

Continuous note

440

-

01011

-

15

Interrupted tone

1000

2.0

10001

-

16

Interrupted tone

420

1.25

00001

AS2220, Austria

17

Interrupted tone

1000

.05

11110

-

18

Interrupted tone

2500

.025

01110

-

19

Interrupted tone

2500

0.5

10110

-

20

Interrupted tone

700

6/12

00110

Pre-vital mess, Sweden

21

Interrupted tone

1000

1.0

11010

-

22

Interrupted tone

700

4.0

01010

Air-raid, Sweden

23

Interrupted tone

700

0.25

10010

Local warning, Sweden

24

Interrupted tone

720

0.7/0.3

00010

Industrial alarm, Germany

25

Int, fast, rising volume

1400

0.25

11100

-

26

Fast siren

250-1200

0.085

01100

-

27

Rising constant, fall

1000

10/40/10

10100

Industrial alarm, Germany

28

ISO 8201 Evacuation

800-1000

as std

00100

Int'l evacuation alarm

29

Fast whoop

500-1000

0.15

11000

-

30

Slow whoop

500-1200

4.5

01000

Evacuation, The Netherlands

31

Reverse sweep

1200-500

1

10000

Evacuation, Germany

32

Siren

500-1200

3.0

00000

-