According to the type of smoke alarm sensor is divided into both ionization sensor and photoelectric smoke detector. occupancy smoke...

Type No: A Size: 90*90*43mm Voltage: DC9V Alarm: sound-light Sensor: infrared photoelectric sensor Applicable area: 30m² Sensor time: 3 seconds...

Type No: B Size: 90*90*43mm Voltage: DC9V Alarm: sound-light Sensor: infrared photoelectric sensor Applicable area: 30m² Sensor time: 2 seconds...

Car air purifier works against indoor air pollution.  For ordinary people, 80% of their life is spent indoors. The harm...

Car air purifier removes PM2.5. The main pollutants we studied were PM2.5, PM10 and sulfur dioxide.   Car air cleaner...