Description: This product is a smart LED smoke detector, using MCU intelligent processing of optoelectronic signals, with high stability, small sensitivity drift. Features: With dust, insect resistance, anti-white light interference and other functions to ensure product stability. Optional wireless networking capabilities for a variety of installation environment needs. Visible smog produced by slow smoldering or bright burning, have a better ability to reflect. Suitable for fire alarms in residential, factory buildings, shopping malls, hotels, offices, teaching buildings, banks, libraries and warehouses. The low battery voltage reminds you to replace the new battery and ensure the normal use of the product. Automatic reset without manual reset. Infrared photoelectric sensor, efficient and stable sensing. Sound and light alarm / LED indication alarm. SMT industrial manufacturing, strong stability. Specifications: Working power: 3V battery (Not included) Quiescent current: