Detect smoke Quick alarm No wiring required mobile phone alarm SMS notification Intelligent linkage long-term standby Low battery reminder Input voltage: DC3V LRO3 Quiescent current: ≤10uA Working current: ≤100mA Low voltage and under-voltage: ≤2.2V Alarm sound pressure: 85dB/1m Working frequency: 2.405-2.480GHz Detection range: 20mỉ Working temperature: -10°C-+50°C Working humidity: up to 95%RH