🧰 Technical specifications
• Model: DHI-ARA24-W2(868)
• Type: Wireless keyfob
• Buttons: 4 (Home, Away, Disarm, SOS)
• Indicator light: 1 × Two-color status indicator (Green: normal, Red: abnormal)
• SOS emergency alarm: Yes
• Low battery alarm: Yes
• Signal strength detection: Yes
• Remote upgrade: Cloud update
• Wireless frequency: 868.0 MHz – 868.6 MHz
• Transmitter power (EIRP): ≤ 25 mW
• Communication distance: Up to 900 m in open space
• Communication mechanism: Two-way communication
• Frequency hopping: Yes
• Encryption: AES128
• Power supply: 1 × CR2032 battery
• Power consumption: Max. 100 mW
• Battery life: Up to 3 years
• Operating temperature: -10°C to +55°C
• Operating humidity: 10%–90% RH
• Casing material: PC + ABS
• Dimensions: 60.0 × 39.5 × 15.0 mm
• Net weight: 20 g
• Gross weight: 65 g
• Certifications: CE, EN50131 Grade 2, Environmental Class II
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