🧰 Technical specifications
• Model: DHI-ARD821-W2(868)
• Type: Wireless Panic Button
• Button quantity: 1
• Indicator light: 1 × Multi-status LED indicator
• Alarm types: Intrusion, Fire, Gas Leak, Medical Assistance, Emergency
• Signal strength indication: Yes
• Low battery detection: Yes
• Battery level display: Available in App
• Remote update: Cloud update
• Wireless frequency: 868.0 MHz – 868.6 MHz
• Communication distance: Up to 1200 m in open space
• Communication mechanism: Two-way communication
• Encryption: AES128
• Frequency hopping: Yes
• Battery model: CR2032
• Battery life: Up to 3 years (used twice per week)
• Operating current: 28 mA
• Test mode: Yes
• Protection rating: IP54
• Operating temperature: -10°C to +55°C
• Operating humidity: 10%–90% RH
• Installation: Wall mount / Portable
• Casing material: PC + ABS
• Dimensions: 55 × 36 × 14.2 mm
• Net weight: 18 g
• Gross weight: 48 g
• Certifications: CE, EN50131 Grade 2, Environmental Class II
English