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D900-24-00                                                                                              2                                                                                          I56-0936-003R

Chime Selection

Chimes are factory set for high volume, 1.0K repeating 1 second 
chime. Tones may be selected by making the appropriate settings 
on the DIP Switch located on the printed circuit board. The set-
tings required for the available tone options are as follows:

Table 1: SpectrAlert Chime Switch Settings

Switch

  1=on  0=off

1

2

3

4

Hz

Type

1

1

1

1

1.2k

Repeating 1-Second Chime

1

0

1

1

1.0k

1

1

0

1

0.8k

1

0

0

1

1.2k

Repeating 

1

/

4

-Second Chime

1

1

1

0

1.0k

1

0

1

0

0.8k

1

1

0

0

1.2k

Temporal 3 Chime

1

0

0

0

1.0k

0

1

1

1

0.8k

0

0

1

1

1.2k

Single Stroke Chime

0

1

0

1

1.0k

0

0

0

1

0.8k

0

1

1

0

3.0k

Electromechanical Continuous

0

0

1

0

3.0k

Electromechanical Temporal 3

0

1

0

0

0.5k

Electromechanical Continuous

0

0

0

0

0.5k

Electromechanical Temporal 3

Volume Switch

5

6

0

0

LOW

1

0

MED

1

1

HIGH

SpectrAlert Electronic Chime Current Draw*

8-33VDC:  10–61mA

*Average current draw varies with tones selected. Current ratings per System Sensor testing at 12VDC and 24VDC. Add current values when connecting in parallel.

Table 2: SpectrAlert Electronic Chime Sound Output Guide

      Tone

8 Volts

12 Volts

24 Volts

33 Volts

Low

Med.

High

Low

Med.

High

Low

Med.

High

Low

Med.

High

1.2K Repeating 1-Second Chime

51

52

55

53

54

56

57

61

52

59

61

64

1.0K Repeating 1-Second Chime

48

50

54

51

52

54

54

57

60

57

60

62

0.8K Repeating 1-Second Chime

47

47

53

49

51

52

53

55

58

55

58

60

1.2K Repeating 

1

/

4

-Second Chime

53

54

58

55

57

59

59

61

64

61

63

66

1.0K Repeating 

1

/

4

-Second Chime

49

50

54

51

53

54

55

57

60

57

59

62

0.8K Repeating 

1

/

4

-Second Chime

48

50

53

50

52

53

54

56

59

56

58

61

1.2K Temporal 3 Chime

51

52

56

52

54

55

55

57

61

58

60

63

1.0K Temporal 3 Chime

48

49

54

49

51

51

53

55

58

55

57

60

0.8K Temporal 3 Chime

46

47

51

48

50

51

52

54

57

54

56

59

1.2K Single Stroke Chime

52

53

58

52

54

56

56

58

62

58

60

64

1.0K Single Stroke Chime

47

48

53

50

51

59

53

55

58

56

58

62

0.8K Single Stroke Chime

47

48

53

49

50

52

54

56

60

56

59

61

3.0K Continuous Electromechanical

56

57

61

59

60

67

65

68

70

68

70

74

3.0K Temporal Electromechanical

51

52

56

53

54

61

56

59

62

58

60

64

0.5K Continuous Electromechanical

48

49

53

51

52

56

54

57

60

56

55

61

0.5K Temporal Electromechanical

45

47

51

47

49

53

51

52

58

52

54

60

NOTE:

  Factory default setting is 1.0K Repeating 1 Second Chime set at High volume.

SpectrAlert Chime Tones

Repeating 1-Second Chime

Repeating 

1

/

4

-Second Chime

Temporal 3 Chime

Single Stroke Chime

Continuous 500Hz Electromechanical and 3kHz Electromechanical

Temporal 500Hz Electromechanical and 3kHz Electromechanical

Scale:

1 second

Table 3: Strobe Current Draw Measurements

NOTE:

  All models were only tested at the 16-33 Volt-FWR/DC limits. This does not include the 80% low-end or 110% high-end voltage limits.

Model No.

Candela Setting

FWR Operating 

Current–Strobe

(mA RMS)

DC Operating

Current–Strobe

(mA RMS)

CH24MC

Chime/Strobe

15

84

59

15/75

74

69

30

93

90

75

158

160

110

208

209

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