Type No: E Size: 105*105*51mm Voltage: DC3V Alarm: sound-light Sensor: infrared photoelectric sensor Applicable area: 50m² Sensor time: 3 seconds Installing location: ceiling Battery life: 3 years Battery: 3V lithium battery   Anlian Co.,Ltd  is Designer / Manufacturer / Factory / Wholesaler of Smart Fire Alarm Sensor Wireless. As an OEM manufacturer, we support our...