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-5- 

WAIL 

(Wail default) §, *, 

 

YELP 

(Yelp default) §, * 

THUNDER 

(THUNDER default)  

TWO-TONE 

(THUNDER Step Up 

default)

 

MECHANICAL WAIL 

(FIRE ENGINE)

 

 

HOOT 

RAPID HOOT 

AIR HORN & YELP 

10 

GHOST 

11 

RAPID GHOST 

12 

SINGLE AIR HORN 

13 

SINGLE QUICK 

14 

DOUBLE POST POP AIR HORN 

15 

TWO TONE AIR HORN 

16 

STANDARD AIR HORN 

Tones For WAIL, YELP, and 

THUNDER, and Thunder Step-Up 

Function 

 

§ 

= SAE  approved 

* = California Title 13 approved 

 

= See below 

MAX YELP 

§, * 

17 

CONTINUOUS TONE 

18 

CONTINUOUS BEEP 

Tones For MANUAL Button & AUX Wire 

STANDARD AIR HORN 

(AUX default) 

LOW FREQUENCY AIR HORN 

RAPID AIR HORN 

AIR HORN II 

DOUBLE POST POP AIR HORN 

SINGLE AIR HORN 

SINGLE QUICK AIR HORN 

TWO TONE AIR HORN 

MANUAL 

(MANUAL default) * 

10 

MECHANICAL MANUAL 

(FIRE ENGINE)

 

 

Tones for HORN Button 

STANDARD AIR HORN 

(default) 

LOW FREQUENCY AIR HORN 

RAPID AIR HORN 

AIR HORN II 

DOUBLE POST POP AIR HORN 

SINGLE AIR HORN 

SINGLE QUICK AIR HORN 

TWO TONE AIR HORN 

►►►► 

System Reset 

◄◄◄◄

 

If you would like to reset ALL of the siren programming 
options to their defaults, activate any tone and press 
the 

Program button 

for nine (9) seconds.  The LED will 

flash once, then twice, then three times, and all siren 
tones will stop.

 

Wind Down or Hard Stop Option 

 

By default, the Wail tones indicated by the “

” above will “wind down” when they 

are de-activated.  If you prefer to have them immediately stop (i.e. hard stop), hold 
the Program Button for 3 seconds (until the LED flashes once).  This will change it to a 
hard stop.  Repeat to change back to the wind down option. 

(Installer Selectable Options CONT’D)

 

Optional Tones

 

Tone Disable Option 

 

Some municipalities may ban the use of specific tones, such as the 

Thunder

 tone.  

The 

Thunder Disable

 jumper option (found in our previous versions of the ST240) has 

been replaced with the 

Optional Tone Programming 

feature described on the 

previous page.  This will allow you to reprogram the 

THUNDER

 default tone from 

Thunder

 to any of the other tones listed.  This new feature expands the former option 

(that was previously limited only to disabling the Thunder tone) to the ability to 
replacing ANY of the tones that may not be permitted (or desired). 

Auxiliary-Manual Function Option 

 

By default, when the siren is in 

THUNDER

YELP

, or 

WAIL

 modes, and the AUX function 

is activated (typically by the steering wheel horn relay), the siren will produce the 
standard Air Horn Tone (#1 in the chart above) and temporarily override the siren 
tone.  If you would rather have the AUX function (i.e. steering wheel horn) mimic the 
MANUAL button 

(see MANUAL button functions on page 7)

,

 

then you should 

program the AUX function for tone #9 (Manual) or #10 (Mechanical Manual).   

Summary of Contents for Street Thunder ST240

Page 1: ...944 2557 www galls com NOTICE Due to continuous product improvements we must reserve the right to change any specifications and information contained in this manual at any time without notice Galls an...

Page 2: ...NECTIONS 2 3 Wiring Guide 2 Wiring Diagram 2 Mandatory Connections 3 Optional Connections 3 INSTALLER SELECTABLE OPTIONS 4 5 DIP Switch Settings AUX P K Polarity 4 Optional Tone Programming 4 5 OPERAT...

Page 3: ...ears of safe reliable operation Please read all instruction before installing the unit Failure to follow these instructions can cause serious damage to the unit or vehicle and may void warranties Qual...

Page 4: ...o the positive terminal of the battery should be fused at the battery for their rated load Review the charts below that indicate the recommended wire gauge based upon the length of the wire run and th...

Page 5: ...n in HF mode see page 6 Air Horn activation or Manual step up function see page 5 If you will be using any of these features cut the wire that connects the horn relay to the horn Connect the side from...

Page 6: ...lectable Options Optional Tone Programming The ST240 will produce 7 different tones sounds by activating its various functions Function Default Tone Thunder Step Up THUNDER MAN Two Tone THUNDER Thunde...

Page 7: ...y default the Wail tones indicated by the above will wind down when they are de activated If you prefer to have them immediately stop i e hard stop hold the Program Button for 3 seconds until the LED...

Page 8: ...ols the primary operating function of the siren THUNDER Ultra fast changing tone used for maximum attention YELP A rapidly changing tone used in congested areas WAIL A slower changing tone used on hig...

Page 9: ...way momentary switch for the Manual function and the Air Horn Radio Volume The radio repeat volume VOL control is recessed in the upper left hand corner of the front face This should be set when the...

Page 10: ...turned on Does microphone button release properly Is the PK jumper option properly configured Does the siren work when Park Kill input is disconnected Check for a short Check for an open No PA PA vol...

Page 11: ...Amps 13 6 VDC dual 100W speakers Standby Current Switch Off Backlighting Off Less than 4 mA Switch On Backlighting Off Less than 7 mA Switch Off Backlighting On Less than 40 mA Switch On Backlighting...

Page 12: ...aser During this warranty period the obligation of Galls is limited to repairing or replacing as Galls may elect any part or parts of such product which after examination by Galls is determined to be...

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