Well, you know what a home siren is. It’s a device that produces very loud noises to notify everyone in the area that something has gone wrong — whether it’s an intruder, a fire alarm, a water leak, or any other critical event. This time, we are reviewing two models: the Ajax StreetSiren and the Ajax HomeSiren. And of course, judging by the names, you’ve got dedicated indoor and outdoor devices here. The main difference lies in the sound output and protection level, but let’s take a deeper look and explore all the features, build quality, and real-world applications of both devices.
Unboxing and Design
Inside each box, you will find the respective siren securely packaged in cardboard wrapping, along with a quick start guide and a pack of mounting screws.
In terms of design, the Ajax StreetSiren is approximately five times larger than the HomeSiren. Both devices are thoughtfully engineered to match their intended environments — indoor and outdoor.
The Ajax HomeSiren features a cloth-covered front panel that conceals the internal buzzer, capable of producing sound levels between 81 and 105 decibels. The back cover is removable, revealing a power button, a QR code for quick pairing, a tamper button, and an input port for an optional external LED indicator.
The Ajax StreetSiren, on the other hand, is built for outdoor use. Its front panel is metal with a cold finish, and the body is encircled by a prominent LED frame designed for high visibility. The buzzer here delivers an impressive 85 to 113 decibels of acoustic output. Under its rear cover, you will find a power button, a QR code, and terminals for connecting an external power supply.
An interesting design choice: unlike the HomeSiren, the StreetSiren does not include a physical tamper button. Instead, Ajax has integrated an accelerometer that detects any attempt to dismount or tamper with the device — a more robust solution for outdoor scenarios.
Specifications / Features
| Device |
Ajax HomeSiren |
Ajax StreetSiren |
| Type | Wireless Indoor Siren | Wireless Outdoor Siren |
| Alarm Volume | 85 – 123 dB | 85 – 123 dB |
| LED’s | Internal / External | Internal / External |
| Operating Range | 2,000 m. | 1,500 m. |
| Comm. Protocol | Ajax Jeweller | Ajax Jeweller |
| Battery Life | Up to 5 Years | Up to 5 Years |
| Pings Frequency | 12-300 ms. | 12-300 ms. |
| Protection Rate | – | IP-54 |
| Additional | Tamper Button | Built-in Accelerometer |
What Do You Get with Ajax Sirens?
Ajax Sirens deliver a well-rounded set of capabilities that perfectly complement the Ajax ecosystem. Both indoor and outdoor models share the signature Jeweller radio protocol, ensuring fast and secure wireless communication with the Hub at distances of up to 1,500 to 2,000 meters in open space.
Here is what you get:
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Ping frequency: adjustable, from 12 to 300 seconds, so the system continuously monitors device status and connection integrity.
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Transmission range:
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HomeSiren: up to 2,000 meters.
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StreetSiren: up to 1,500 meters — optimized for outdoor use.
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Ingress protection:
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StreetSiren: IP54 certified — resistant to dust and rain, designed to withstand outdoor conditions.
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HomeSiren: not IP-rated — intended for indoor installation.
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Battery life: up to 5 years on both models — minimizing maintenance needs.
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Status indication: when the system is armed or disarmed, you get:
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A push notification in the Ajax app.
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An audible sound and LED flash from the siren itself — providing an immediate visual and acoustic confirmation of system status.
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In other words, Ajax sirens are not just loud alarms — they provide clear status feedback and proactive deterrence, enhancing both the security and usability of your Ajax system.
Conclusion
Ajax Sirens are a highly effective deterrent against intruders. In the event of a break-in, the siren is triggered instantly, filling the space with a powerful acoustic alarm and flashing light. This sudden response serves to disorient the intruder and dramatically reduce the time they are willing to remain on the premises. Moreover, the alarm draws immediate attention from neighbours and bystanders, increasing the likelihood of intervention.
The siren’s physical design also complicates any attempt to disable it quickly. Combined with seamless integration into the Ajax system and reliable wireless performance, Ajax Sirens are a must-have component for anyone looking to strengthen the real-world effectiveness of their home or business security setup.
