1、Direction recognition function, intelligent dual sensing area, accurately identify entering and exiting, and say different words. 2、There are 13 different voice prompts for entering and exiting, and daily expression and holiday greetings can be selected. 3、The premium infrared motion detector can be used as a welcome device during the day and as an antitheft alarm at night. 4、When someone enters and exits the door in welcome mode, the welcome device will send out a welcome speech; when a thief enters in alarm mode, the welcome device will sound an alarm. 5、4 levels of volume can be adjusted, the sound is clear and pleasant, one click adjustment, the volume can be large or small, easy to operate. 1 x Welcome Doorbell1 x Sticker2 x Screw2 x Expansion Tube1 x Bracket1 x Base1 x Manual  Item Type: Welcome DoorbellMaterial: ABSApplication: Home, shop, supermarket, warehouseBattery: 3pcs AA batteries (Not included)USB Power Supply: DC 5VAlarm Duration: 30 secondsInfrared Sensing Distance: Approx. <8m/26ft