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πŸ“˜ StreetSiren User Manual

StreetSiren is a wireless street siren with the capacity up to 113 dB. It can be quickly installed and set up, is furnished with bright LEDs, and can operate from a power unit or up to 5 years from batteries.

StreetSiren operates within the Ajax security system, by connecting via the protected Jeweller protocol to the Hub. The communication range is up to 1,500 meters if there are no obstacles.

The siren is set up via a mobile application for iOS and Android-based smartphones or a web application. The user is notified of all events through push notifications, SMS messages and calls (if activated).

Not compatible with the Ajax uartBridge or Ajax ocBridge Plus

The Ajax security system is self-sustaining, but the user can connect it to the central monitoring station of a private security company.

Functional elements

  1. LED frame
  2. Light indicator
  3. Siren buzzer under the metal net
  4. SmartBracket attachment panel
  5. External power supply connection terminals
  6. QR code
  7. On/off button
  8. Place of fixing the SmartBracket panel with a screw

StreetSiren Operating Principle

The siren significantly improves the efficiency of the security system, being the most operational means of response to the intrusion into a protected area. With a high probability, its alarm signal and the light indication will be sufficient to frighten away the intruders.

The device is furnished with a powerful buzzer and bright LEDs - StreetSiren can be seen and heard from far. Subject to correct installation, it would be hard to dismount and deactivate the actuated siren: the body is firm, the buzzer is protected by a metal net, there is an autonomous power supply and even the on/off button is locked in case of alarm.

StreetSiren has no tamper to detect removal or tearing-off from the attachment, an accelerometer (motion detector) is used instead. If the accelerometer is switched on, the alarm will be actuated, if the siren is dismounted.

Connecting the Siren to the Hub

Before starting connection:

  • Following the Hub instruction recommendations, install the Ajax application on your smartphone. Create an account, add the Hub to the application, and create at least one room.
  • Go to the Ajax application.
  • Switch on the Hub and check the internet connection (via Ethernet cable and/or GSM network).
  • Ensure that the Hub is in armed mode and does not start updates by checking its status in the mobile application.

⚠️ Only users with administrative privileges can add the device to the Hub

How to connect the siren to the Hub:

  1. Select the Add Device option in the Ajax application.
  2. Name the device, scan/write manually the QR Code (located on the body and packaging), and select the location room.

  3. Select Add β€” the countdown will begin.
  4. Switch on the device

The on/off button is recessed in the body and is rather stiff, you may use a thin solid object to press it.

The StreetSiren siren operates only with the Ajax security system. Up to 10 sirens may be connected to the Hub.

Request for connection to the Hub is transmitted for a short time at the time of switching on the device. If the device was already assigned to another hub, switch off StreetSiren, then perform the standard adding procedure.

If the connection to the Hub failed, LED in the corner will blink 6 times, then the entire LEDs ring will blink 3 times and the siren will switch off. You may repeat the connection attempt then.Β 

The siren connected to the Hub will appear in the list of devices of the hub in the application. Update of the siren statuses in the list depends on the device inquiry time set in the hub settings, with the default value - 36 seconds.



Parameter Value
Temperature of the device. Measured on the processor and changes gradually
Signal Strength
Signal strength between the Hub and the siren
Connection status between the Hub and the siren
Battery Charge
Battery level of the device
The tamper mode of the device, which reacts to the detachment of or damage to the body
External Power State of the sirens external power
Alarm Volume
Volume level in case of alarm
Alarm Duration
Duration of the alarm sound
Alarm if moved The siren will be actuated, if you turn over the body or tear off the device from the attachment
Armed mode indication
If activated, the siren LED blinks once every 3 seconds when the security system is armed
Beep when arming/disarming
If activated, the siren warns about the activation and deactivation of the guard mode by the LED and a short sound signal
Beep on delay
If activated, siren will beep delays (available from 3.50 FW version)
Siren firmware version
Device ID
Device identifier

Setting Up the Siren


Setting Value
First field
Device name, can be edited
Selecting the virtual room to which the device is assigned
Alarm Volume
One of the three volume levels of the siren is set up (85 dB to 113 dB at a distance of 1 m)
Alarm Duration
The setting determines how long the siren sounds, if the alarm is activated (from 3 to 180 seconds per each actuation)
Alarm if moved The siren will be actuated, if you turn over the body or tear off the device from the attachment.
The built-in accelerometer needs about a minute to stabilize its position. Take time to check the operating capacity of the function in case of its activation until this time expires.
Armed mode indication
If activated, the siren LED lights up with a pause of 2 seconds when the security system is in the guard mode
Beep when arming/disarming
Is activated, the siren warns about the activation and deactivation of the guard mode by the light of the LED ring and a short sound signal
Beep on delay
If activated, siren will beep delays (available from 3.50 FW version)
Volume test
Start a volume test of the siren
Signal Strength Test
Switches the device to the signal strength test mode
Signal Fade Test
Switches the siren to the signal fade test mode (available in devices with firmware version 3.50 and later)
User Guide
Opens the siren User Guide
Unpair Device
Disconnects the siren from the Hub and deletes its settings


Switching on the device
LED ring lights up and goes down once
Switching off the device
The LED ring will light up for 1 second, then blink three times
Registration failed
LED in the corner blinks 6 times, then the entire LED ring blinks 3 times and the siren switches off
Security system set in the guard mode (if indication activated)
Blinks once with the LED ring and emits a short sound signal
Security system removed from the guard mode (if the indication is activated)
Blinks twice with the LED ring and emits two short sound signals
Siren in the guard mode (if the indication is activated)
LED in the corner lights up with a pause of 2 seconds
Battery low
LED in the corner goes up and down when the system is set in and removed from the guard mode, the alarm is actuated, in case of dismounting or unauthorized opening

Performance testing

The Ajax security system allows conducting tests for checking the functionality of connected devices.

The tests do not start straight away but within a period of 36 seconds when using the standard settings. The test time start depends on the settings of the siren scanning period (the paragraph on β€œJeweller” settings in Hub settings).

  • Volume Test
  • Signal Strength Test
  • Fading signal test

Installing the Siren

Make sure that the alarm in case of actuation of the accelerometer before the device location is identified and the device is installed is switched off in the siren settings siren - to avoid the siren actuation. Β 

Location of the StreetSiren determines its remoteness from the hub and presence of any obstacles between the devices, hindering the radio signal and sound transmission: walls, inserted floors, large-size objects located within the room.

Check the signal level at the installation location

If the signal level is one division, we cannot guarantee stable operation of the security system. Take possible measures to improve the quality of the signal! As a minimum, move the device - even 20 cm shift can significantly improve the quality of reception.

The siren body has the dust/moisture protection class IP54 - the device may be placed outdoors. Recommended installation height - 2.5 meters and more. This will complicate the access to the device for intruders in case of entering. Β 

Do not install the siren in places where the acoustic signal will be attenuated.

Siren Installation

Before installing the siren, make sure that you have selected the optimal location and it is in compliance with the conditions contained in this manual. In installing the siren, be careful and observe safety regulations!

In installing and operating the StreetSiren, follow the general electrical safety regulations for using electrical appliances, as well as the requirements of regulatory legal acts on electrical safety.

It is strictly prohibited to disassemble the device under voltage! Do not use the device with a damaged power cord.Β 

  1. The StreetSiren siren can operate up to 5 years from factory-assembled batteries (subject to the inquiry frequency by the hub of 1 minute) or approximately 5 years of the buzzer sound. If you want to use the external power supply (12 V), then drill a hole for wires in the SmartBracket attachment. Prior to installation, make sure that there is no damage of the wire insulation!
    You need to drill a hole in SmartBrecket to lead out a wire of the external power supply.
  2. Fix the SmartBracket panel on the surface using factory-made screws. After selecting other attachment hardware, make sure that they do not damage or deform the panel.

    We warn away from using double-sided adhesive tape for either temporary or all the more permanent attachment of the siren.Β 
  3. Put the siren on the SmartBracket panel and turn it clockwise. Fix the device with a screw.
    Fixing the siren attachment with a screw will minimize the risk of spontaneous theft of the device.

Siren Maintenance and Battery Replacement

Check the operational capability of the HomeSiren on a regular basis. Clean the siren body from dust as it appears.

Do not use for cleaning the siren any substances containing alcohol, acetone, gasoline and other active solvents.Β 

The siren can operate up to 5 years from factory-assembled batteries (subject to the inquiry frequency by the hub of 1 minute) or approximately 5 years of the buzzer sound. In case of the battery discharge, the security system will send the respective notices and the corner LED will smoothly go up and down when the system is set in or removed from the guard mode (if the indication is activated), if the alarm is actuated, in the event of dismounting, or unauthorized opening.

It is not recommended to replace batteries yourself! Contact Support Service or the Service Centre for battery replacement.

Tech specs

Type of notification
Sound and light (LEDs)
Sound notification volume
85 dB to 113 dB at a distance of 1 m (adjustable)
Operating frequency of the piezo annunciator
3.4 Β± 0.5 kHz
Protection against dismounting
Frequency band
868.0 – 868.6 MHz or 868.7 – 869.2 MHz depending on the region of sale
Maximum RF output power
Up to 20 mW
Modulation of the signal
Radio signal range
Up to 1,500 m (any obstacles absent)
Power supply
4 Ρ… CR123A, 3 V
Battery life
Up to 5 years
External supply
12 V, 1.5 A DC
Body protection level
Operating temperature range
From -25Β°Π‘ to +60Β°Π‘
Operating humidity
Up to 95%
Overall dimensions
200 Ρ… 200 x 51 mm
502 g

Complete Set

  1. StreetSiren
  2. Battery CR123A (factory-set) - 4 pcs
  3. Installation kit
  4. Quick Start Guide


Warranty for the Ajax Systems Inc. devices is valid for 2 years after the purchase and does not apply to the supplied battery. If the device does not work correctly, you should first contact the support service β€” in half of the cases, technical issues can be solved remotely!

πŸ‘‰πŸ» The full text of the warranty

πŸ‘‰πŸ» User Agreement

Technical support:

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