Type No: A Size: 90*90*43mm Voltage: DC9V Alarm: sound-light Sensor: infrared photoelectric sensor Applicable area: 30m² Sensor time: 3 seconds Installing location: ceiling Battery life: 1 years Battery: No.5   Anlian Co.,Ltd  is Designer / Manufacturer / Factory / Wholesaler of  Alert Smoke Alarm Carbon Monoxide. As an OEM manufacturer, we support our distrbutors to...