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AJAX HomeSiren Indoor siren via radio


Wireless indoor siren that intensely alerts on the activation of the detector. It is installed inside the home to warn of danger or deter intruders.

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In Stock

48,58 €


69,39 €

More info

  • Authentication to avoid forgery
  • Detection of inhibition and encryption of communication channels
  • Tamper tamper
  • Grade 2 security
  • Indicates whether it is armed or disarmed via a built-in LED
  • If necessary, an external LED can be connected to the siren
  • Customizable alarm volume and duration during detector activation

Operating principle

The device alerts the activation of the detector with an audible alarm. The volume and duration of the alarm can be adjusted in the mobile application.


External LED connector available. It can be installed outside the apartment or office to monitor the security status of the system.

Installation and configuration

Ready to go straight out of the box - the battery is already installed so there is no need to disassemble the siren. With just one click, you can connect to the central unit (hub) in the application of your mobile device. It can be installed on the SmartBracket in a few minutes.
AJAX Siren

Technical specifications

Classification: Acoustic Security Detector with Radio Channel
Siren Type: Wireless
Installation method: Indoor
Compatibility: Only works with Hub, Hub Plus and ReX
Notification type: Sound
External LED connector: Yes
Sound volume: Adjustable, from 81 to 105 dB at a distance of 1 m
Alarm duration: Adjustable: 3 to 180 s
Armed / disarmed status indication Yes
Reception time of the alarm signal 0.15 s
Battery Power: Two CR123A batteries
Power supply voltage: 3V
Battery life: up to 5 years

Jeweler radio technology: Communication range with the central unit: up to 2000 m in open space
Two-way communication between devices
Operating Frequencies: 868.0-868.6 MHz
Self-adjusting radio frequency output power: up to 20mW
Block encryption based on AES algorithm
Detector scan period: 12,300s

Read more about Jeweler>

Temperature sensor: Available
-10 ° C to 40 ° C operating temperature range
Allowable humidity Up to 75%
Enclosure protection index IP50
Tamper: Tamper Protection Inhibition Detection / Tamper Resistant
Remote setup and testing +
Dimensions 75E76E27 mm
Weight 97 g
Certification: Grade 2, CE
Warranty: Repair and replacement up to 24 months after the date of purchase. Batteries are not covered by warranty

Product content:
Mermaid HomeSiren
SmartBracket fixing panel
Connector for LED indicator
Two CR123A batteries (pre-installed)
Installation kit
User's guide


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AJAX HomeSiren Indoor siren via radio

AJAX HomeSiren Indoor siren via radio

Wireless indoor siren that intensely alerts on the activation of the detector. It is installed inside the home to warn of danger or deter intruders.

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