🧰 Technical specifications
• Model: DHI-ARA12-W2(868)
• Type: Wireless indoor siren
• Indicator light: 1 × Green alarm indicator
• Button: 1 × Power button
• Tamper alarm: Yes
• Low battery alarm: Yes
• Signal strength detection: Yes
• Test mode: Yes
• Temperature monitoring: Yes
• Remote upgrade: Cloud update
• Wireless frequency: 868.0 MHz – 868.6 MHz
• Transmitter power (EIRP): ≤25 mW
• Communication distance: Up to 1000 m in open space
• Communication mechanism: Two-way communication
• Encryption: AES128
• Frequency hopping: Yes
• Power supply: 2 × CR123A batteries
• Battery life: Up to 2.5 years (triggered twice per week, 120-second alarm duration)
• Power consumption: Max. 240 mW
• Sound pressure:
• High volume: 84 dB(A) at 1 m
• Medium volume: 78 dB(A) at 1 m
• Volume adjustment: 3 levels
• Temperature measurement range: -15°C to +65°C
• Temperature measurement accuracy: ±1°C
• Temperature resolution: 1°C
• Operating temperature: -10°C to +55°C
• Operating humidity: 10%–90% RH
• Installation: Bracket mount
• Casing material: PC + ABS
• Dimensions: 81 × 81 × 26 mm
• Net weight: 105 g
• Gross weight: 175 g
• Certifications: CE, EN50131 Grade 2, Environmental Class II
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