• Product : Intelligent inner siren
• Protocol : Zigbee 3.0 (2.4GHz) – requires a Zigbee gateway
• Power supply : DC 5V 1A (Micro-USB port)
• Battery : 500mAh, rechargeable (power maintained via 2000 ranges)
• Dimensions : ~75x75x30mm (compact)
• Assembly : Wall mural (screws included)
• Mermaid : 95dB (3m)
• Temperature : -10°C to +50°C
• Functions : Sound alarm, app notification, automations, battery backup

Buy on domadoo (20.57€)
Buy on amazon (25.83€)