Fire Alarm & Smoke Detector, Alarm & Security Systems, Carbon Monoxide Alarm manufacturer / supplier in China, offering As3786 10 Years Battery Wireless Interconnected Photoelectric Smoke Alarm, Europe Standard En14604 Mains Power RF433 Interconnected Smoke Sensor Fire Alarms Detectors, Interconnected Smoke & Carbon Monoxide Detector with 10 Year Battery Interlinked Alarm and so on.