Wireless Welcome Chime Alarm Door Bell PIR Motion Sensor for Shop Entry Security Protection Alarm Doorbell

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About this item:

• Power supply: DC 9-15V adapter (not included) or 3 pieces of AAA battery (battery not included)
• Induction method: active infrared sensor
• 3 modes: voice alarm, music, human voice in "VOICE" mode:, Doraemon, Ninhao Huan Ying Guang Ling; "Music" mode in "alarm" mode: keeps you aware of intruders; in: like a doorbell, with 32 music to your guests
• Detection angle: horizontal angle 110 degrees, vertical angle 15 degrees
• Volume: 4 levels adjustable (volume cannot be adjusted in alarm mode)

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