The AJAX HomeSiren Jeweller is a wireless indoor siren with an LED connector, designed to provide audible and visual alerts for alarm events. It operates autonomously on pre-installed batteries for up to 5 years and communicates via the secure Jeweller radio protocol.
Power & Battery
• Battery Life: Up to 5 years with pre-installed CR123A batteries
• Operating Voltage: 1.9–3.3 V⎓
• Nominal Voltage: 3 V⎓
• Quiescent Current Consumption: 68 µA
• Peak Current Consumption: 1.1 A (at maximum volume)
• Average Current Consumption: 50 mA (at default volume)
• Low Battery Voltage: 2.1 V⎓
• End-of-Life Battery Voltage: 1.9 V⎓
• Battery Capacity: 3,200 mAh (2 × 1,600 mAh CR123A batteries)
📡 Communication
• Protocol: Jeweller (encrypted two-way communication)
• Frequency Bands: 866.0–869.2 MHz, 905.0–926.5 MHz, 915.85–926.5 MHz, 921.0–922.0 MHz (region-dependent)
• Radio Range: Up to 2,000 m in open space
• Modulation: GFSK
• Frequency Hopping: Yes, to prevent interference
🔊 Alarm & Indicators
• Alarm Volume: Adjustable from 80 to 100 dB at 3.3 ft
• Default Volume: 93 dB at 3.3 ft
• Alarm Duration: Configurable from 3 seconds to 3 minutes
• Siren Frequency: 3.4 ± 0.5 kHz
• LED Indicators: Built-in LED; supports external LED indicator (3 V⎓)
• Chime Function: Yes, for door opening notifications
• After-Alarm Indication: Yes
🛡️ Security Features
• Tamper Protection: Alerts on attempts to detach or remove the device
• Communication Loss Detection: Within 36 seconds
• Spoofing Protection: Device authentication
📐 Physical & Environmental
• Dimensions: 75 × 76 × 27 mm
• Weight: 97 g
• Operating Temperature: –10°C to +40°C
• Operating Humidity: Up to 75%
• Protection Class: IP50
📦 Package Includes
• HomeSiren Jeweller
• SmartBracket mounting panel
• 2 × CR123A batteries (pre-installed)
• LED connector
• Installation kit
• Quick start guide