Wireless street siren Ajax StreetSiren black — outdoor siren, wireless alarm device, black

Ajax StreetSiren black is a wireless outdoor siren that provides audible and visual alerts as part of an Ajax security system. The device connects to an Ajax Hub over the Jeweller radio protocol and supports a maximum open-space range of up to 2,000 meters; typical operation reaches up to 1,500 meters in built environments. Power can be supplied by four pre-installed CR123A batteries or an external 12 V DC source. Alarm sound level and duration are adjustable to match installation needs.

Advantages

The siren delivers both light and sound alarms with an adjustable volume range from 85 to 113 dB at 1 m and a piezo buzzer frequency around 3.5 kHz. It features tamper and dismount protection — opening or moving the device triggers an immediate alarm. The unit operates across a wide temperature range (-20°C to +50°C) and up to 95% humidity, has an estimated battery life up to 5 years, and provides indicators for battery level and arm/disarm status. Remote testing of connection quality and detection area is supported, and installation is simplified by SmartBracket mounts and an interactive manual.

Suitable for

• Perimeter protection for yards, gates and fences
• Outdoor areas around garages and outbuildings
• Commercial properties and multi-floor business centers (as part of an Ajax system)
• Temporary or hard-to-wire installations requiring wireless alerts

Key specifications

• Device type: Wireless outdoor siren (works only with Ajax Hub)
• Alarm type: Light and sound (red LED + piezo buzzer)
• Sound level: Adjustable 85–113 dB (measured at 1 m)
• Piezo buzzer frequency: 3.5 ±0.5 kHz
• Power supply: 4 × CR123A batteries (pre-installed, 3 V each) or external DC 12 V ±20%
• Battery life: Up to 5 years; battery indicator included
• Standby current: 70 µA (polling every 36 s); max alarm current 1.45 A
• Maximum power consumption: From batteries — 4.35 W; from DC 12 V — 13.5 W
• Radio: Jeweller protocol, 868.0–868.6 MHz, 25 mW
• Maximum communication range: Up to 2,000 m in open area (typical up to 1,500 m in built environments)
• Polling interval: Adjustable, 12–300 s
• Alarm duration: Configurable, 3 s to 3 min; triggering time < 1 s
• Ingress protection: IP54
• Operating conditions: -20°C to +50°C, up to 95% humidity
• Dimensions and weight: 200 × 200 × 51 mm; 502 g
• Tamper protection: Yes (accelerometer; dismount protection)

How to use

Mount the StreetSiren on SmartBracket without disassembling the body according to the interactive manual. Insert or verify the four pre-installed CR123A batteries and, if required, connect an external 12 V DC supply. Add the device to the Ajax Hub using the hub’s device pairing procedure; once paired, configure polling interval, alarm duration and sound level through the Hub app. After installation, perform a remote connection and detection-area test to confirm signal strength and coverage.

Recommendations

The siren should be positioned where its light and sound are unobstructed, at a height and orientation suitable for the protected area. For reliable wireless communication, keep clear line-of-sight to the Ajax Hub where possible or verify range across building floors. Use the external 12 V supply for continuous mains-powered operation; replace batteries before the battery indicator shows low charge to maintain uninterrupted protection.