High sensitivity, sensing distance 2-7 meters. The sensing range can be adjusted freely The volume can be adjusted in three levels, and the sound can be adjusted according to the location to suit your needs. There are multiple voices to choose from in the normal mode, including the welcoming voices of multiple countries.Recording mode: You can record the sound you need, or by voice. Humanized design, simple installation, no need for professional installation, ready to use,Infrared sensing, available day and night, regardless of day or night Bracket activity range: 360° free rotation without dead angle, Manufacturer: Akfldms