Redtronic S20IS User manual

S20IS
Neodymium 20W Speaker with
Integrated Siren USER MANUAL

M013 Issue: 1.5 Created by: Technical Dept. 1 November 2022
Contents
1.0 Introduction 2
2.0 Siren Specification 2
3.0 Power Specification 2
4.0 Internal Controller 3
4.1 Input / Output functions 3
4.2 Dimensions 3
5.0 Setting the Trigger Polarity 4
5.1 Set trigger to –ve polarity 4
5.2 Reset trigger 4
6.0 Setting the Country Mode 5
6.1 Summary of Country Modes and Default Tones 5
6.2 Setting a COUNTRY to an input 5
7.0 Setting the Tone 6
7.1 Summary of Tones 6
7.2 Summary of Default Tones for each ‘Country’ 6
7.3 Changing a Tone on each trigger T1-T3 6
7.4 Loop Tone Options 7
7.5 Changing a Tone on a momentary input 7
8.0 Priority Tones 8
9.0 Night Mode 8
9.1 Activating Night Mode 8
10.0 Test Mode 8
10.1 Deactivate test mode 8
11.0 Monitor Output 8
12.0 Monitor Output function 8
12.0 Diagnostic LED 9
12.1 Explaining how the diagnostic led works 9
13.0 Synchronisation between units 9
14.0 Restore Factory settings 9

M013 Issue: 1.5 Created by: Technical Dept. 2 November 2022
1.0 Introduction
The S20IS siren is an intelligent, user-friendly programmable siren system. The siren system utilises cutting-edge technology to
allow the siren the produce any worldwide emergency vehicle warning siren tone within a single device.
2.0 Siren Specification
Standard Features:
•IP69K Rated
•11-16v & 20-30v Operation
•3 Programmable Inputs
•9 country tone settings
•26 Optional Tone Functions
•Momentary & Latching switch functions
•Synchronisation
•Monitor Output
•Voltage Sense: 9.5v De-power
•Double-hit off (less than 312mSec apart)
3.0 Power Specification
•S20IS sirens are manufactured to operate within the voltage range of 11-16v & 20-30v DC Please note no operation outside
these limits –do not power between 16-20v
Supply Voltage
11-16v / 20-30v DC full power
10-11vDC Possible Reduced sound output
9.5v DC Siren shuts down
Supply Current
Up to 2.4Awhen operational.
Approximately 10mA when inactive
Siren Audio Output @ 13.8V:
Maximum: 20W RMS approx. into 4 ohms, may vary according to tone.
Low/Night: 6W RMS approx. into 4 ohms (90-100dB)
Protection
Under voltage trip: 9.5Volts nominal.
Overcurrent trip: 4 Amps supply current approx., auto-resetting.
Programmable Features:
•Tone options
•3 +ve or –ve trip options
•Night mode Function
• (set as 90-100dB)
•11 UK/ International sequenced tone
options

M013 Issue: 1.5 Created by: Technical Dept. 3 November 2022
4.0 Internal Controller
There are three programmable inputs (TRIGGER T1-T3) available to programme to selectable tone options. These can be set in
+ve or –ve operational polarity depending on the switch input required.
4.1 Input / Output functions
4.2 Dimensions
Function
Colour
Description
Gnd
Black
Ground/0V (High current stud connector)
V+
Red
Power In, positive (High current stud connector)
Trigger 1
Brown
Programmable as +ve or -ve (+ve default)
Trigger 2
Blue
Programmable as +ve or -ve (+ve default)
Trigger 3
Green
Programmable as +ve or -ve (+ve default)
Sync
Yellow
Sync In/Out
Configure/Night
Grey
Dual function - use to configure device and for 'Night mode'
Function 1
Orange
Volume (mainly for microphone)
Function 2
Violet
Volume (mainly microphone)
Monitor
White
A positive output to indicate that siren is working. Will drive upto 50mA at nominal supply voltage
Standby
Mode

M013 Issue: 1.5 Created by: Technical Dept. 4 November 2022
5.0 Setting the Trigger Polarity
5.1 Trigger Polarity (Trigger 1-3 +ve or –ve setting)
The S20IS siren has ‘3’ trigger wires which can be set to 2 options for polarity depending on your switch requirement. This may
be a +ve or –ve trip. As default the unit is set to a +ve trip.
Note: Each Trigger can be set to a different polarity if required.
If you require a negative trip follow this setup procedure:
a) Ensure no power is applied to the unit ( Red & Black wire )
b) Apply the white (monitor) wire to +ve permanently.
c) Now apply power to the unit ( Red & Black wire ). This will put the unit into ‘low volume setup mode’ and will
produce 4 BEEPS
d) Select the trigger input you wish to designate polarity to. In this case, we are setting T1 brown wire. Apply
to –ve Ground
e) The speaker will ‘BEEP’ to confirm input is set to –ve polarity
f) Remove the brown wire from ground
g) Remove the white (monitor) wire from +ve.
h) The unit is now set with T1 as –ve ground trigger
i) Repeat on inputs T2 and T3 if desired
5.2 To return to +ve trigger, simply reverse the operation by reversing the action in the same format:
a) Ensure no power is applied to the unit ( Red & Black wire )
b) Apply the white (monitor) wire to +ve permanently.
c) Now apply power to the unit ( Red & Black wire ). This will put the unit into ‘low volume setup mode’ and will
produce 4 BEEPS
d) Select the trigger input you wish to designate polarity to. In this case, we are setting T1 brown wire. Apply
to +ve
e) The speaker will ‘BEEP’ to confirm input is set to +ve polarity
f) Remove the brown wire from ground
g) Remove the white (monitor) wire from +ve.
T1: Trigger 1 brown wire
T2: Trigger 2 blue wire
T3: Trigger 3green wire

M013 Issue: 1.5 Created by: Technical Dept. 5 November 2022
6.0 Setting the Country Mode
6.1 Summary of Country Modes
Country
Beeps
UK/international
1
Cyprus
2
Germany
3
Austria
4
Netherlands
5
France
6
Italy
7
Finland
8
Norway
9
6.2 Setting a COUNTRY to an input
The S20IS siren can be set to have the 3 trigger inputs (to select the tone) set to any number of 9 optional ‘country settings’ –
this designates the available tones for each region.
Note: All Trigger inputs are locked to the same ‘country’ within the software. You cannot set any input to a
different country setting.
Example: in order to have ‘Germany City tone’ you must first set the Trigger output to ‘Germany Country setting 3’.
a) Ensure no power is applied to the unit ( Red & Black wire )
b) Apply the white (monitor) wire to +ve permanently.
c) Now apply power to the unit ( Red & Black wire ). This will put the unit into ‘low volume setup mode’ and will produce 4
BEEPS
d) Select the trigger input you wish to designate polarity to. In this case we are setting Trigger 2 blue wire. Apply to
+ve. The speaker will ‘BEEP’ to confirm input is set to +ve polarity
e) Pulse the grey (Configure) wire +ve momentarily. On each ‘country’ selection there will be a number of ‘BEEPS’, these
signify the ‘region’ as table in 6.1 (above). E.g France tone selection will activate as ‘6 short beeps’
f) Remove the trigger wire –(in this example) Trigger 2 blue wire +ve momentarily.
g) Remove the white (monitor) wire from +ve.
h) The unit is now set with T2 blue wire as FRANCE DEFAULT TONE MODE
T1: Trigger 1 brown wire
T2: Trigger 2 blue wire
T3: Trigger 3 green wire

M013 Issue: 1.5 Created by: Technical Dept. 6 November 2022
7.0 Setting the Tone
7.1 Summary of Tones
The S20 has 26 optional ‘tones’ built into the software and these are easily selectable on each of the T1-T3 outputs.
Available tones within S20 product are:
7.2 Summary of Default tones for each ‘Country’
To make programming simple, T1-T3 has a default tone applied to each of the trigger outputs. We set them as standard as
the below setting

M013 Issue: 1.5 Created by: Technical Dept. 7 November 2022
7.3 Change preset tones on each trigger T1-T3
Once the ‘Country’ has been set (see 6.0 Setting the Country) you can alter the ‘default’ tones for that country to the other
options available. Note: Some countries will have limited tone options due to the number of ‘tones’ available to that
country for compliance to regulatory standards.
To change the preset tone on a trigger, follow this example:
a) Ensure the Siren is in ‘Standby’ mode
b) Apply the white (monitor) wire to +ve permanently.
c) Apply the brown (T1 tone trigger) wire to +ve permanently
d) A tone will start
e) Apply the grey (Config) wire to +ve momentarily
f) The tone will change to the next available tone
g) Release the brown and grey wires
h) The tone is now saved.
7.4 Loop Tone Options
All ‘UK/International’ tones (Country setting 1 {1 beep}) allow for loop options to be enabled. These tones can be triggered
using a successive momentary action which will activate the tones in a loop as follows:
7.5 Changing a Tone on an input on a momentary input
a) Ensure the Siren is in ‘Standby’ mode
b) Apply the white (monitor) wire to +ve permanently.
c) Apply the brown (T1 tone trigger) wire to +ve momentarily
d) The tone sequence will start, with a short cycle of the tone
e) Apply the grey (Config) wire to +ve momentarily
f) The tone will change to the next available tone sequence ( in order of tones 1-11 )
g) Release the brown and grey wires
h) The tone is now saved.

M013 Issue: 1.5 Created by: Technical Dept. 8 November 2022
8.0 Priority Tones
The Priority of Trigger inputs is (High Priority) T3 > T2 > T1 (Low Priority). This is important if you wish a tone to override
the current tone
9.0 Night Mode
9.1 Activating Night Mode
There is a ‘Night mode’ available on the device which will reduce the sound output to between 90-100dB when the siren is
activated with ‘night mode’ applied.
a) Ensure the Siren is in ‘Standby’ mode (or siren may be activated)
b) Apply the grey (Configure) wire to +ve permanently
c) The sound output will reduce to 90-100dB
Note: the Night Mode sound output level of 90-100dB is a set level due to regulatory requirements and safety. The
level of the Night mode is not able to be altered by the user.
10.0 Test Mode
To enter a ‘test mode’ to ensure the S20 siren is functioning on the correct tone you can follow the following procedure:
a) Ensure the Siren is in ‘Standby’ mode
b) Apply the white (monitor) wire to +ve permanently.
c) Apply the brown (T1 tone trigger) (or T2/T3) wire to +ve momentarily
d) The tone will start at a level of only 1/25th power of full volume
10.1 Deactivate test mode:
a) Remove the white (monitor) wire from +ve supply.
11.0 Monitor Output
11.1 Monitor output function
The monitor output activates when the Siren is outputting a sound of more than 4 watts. Detected faults, such as loss of
communication to the siren driver board, will prevent the signal from activating. Any detected fault will cause the LED
internal to the speaker housing to flash (see 12.0 Diagnostic LED) and the monitor output will deactivate.
The monitor output wire (white) can be connected to an external LED signal, buzzer or computer to monitor speaker
output compliance. This is a positive output that will drive up to 50mA at nominal voltage supply. Please do not put a
heavy load to this wire connection. When there is non-compliance to the standard, the signal will deactivate.

M013 Issue: 1.5 Created by: Technical Dept. 9 November 2022
12.0 Diagnostic LED
12.1 Explaining how the diagnostic led works
Within the siren (not visible externally) there is an LED inbuilt which indicates supply on and normal siren operation. If a fault
condition exists, a repetitive sequence of flashes indicates the nature of the fault as follows:-
1) Constantly lit –normal operation;
2) 1 flash –speaker not connected/weak or volume low;
3) 2 flashes –overload detected;
4) 4 flashes –under voltage power supply detected;
5) 8 flashes –over temperature;
Other combinations may occur:
e.g. 6 flashes = 4+2 = under voltage/overload.
Fault codes are reset when siren or PA is activated, as appropriate.
Note: Opening the siren may invalidate warranty. Please contact the factory if there are any issues with lack of
functionality on the siren.
13.0 Synchronisation between units
The Sync input/output is used to synchronise S20IS siren products exclusively with other Redtronic S20IS siren products. The
Sync wire (yellow) should be connected only to other REDTRONIC S20IS products that are required to run in sequence with each
other.
DO NOT APPLY THE YELLOW WIRE TO +VE SUPPLY IN ANY CIRCUMSTANCE.
DO NOT APPLY THE YELLOW WIRE TO ANY OTHER REDTRONIC PRODUCTS (APART FROM S20IS PRODUCTS) AS THIS WILL
INVALIDATE THE WARRANTY (SUCH AS ‘WARNING LIGHTS’).
14.0 Restore Factory settings
SOFTWARE DOES NOT CURRENTLY SUPPORT RESTORE FUNCTION