... of integration, stable performance, long life, small consumption LT-SA004 Smoke AlarmWith EN 14604 certified This product is chamber adopts the ... , energy saving, electricitySource 9 V, applicable to family single room. For your safety, had better install a in every room an ... Ambient temperature-10°C~50°C Ambient humidity ≤95%(40±2) Smoke Alarm, Sensor Alarm