Eholder Multi-function Electronic Inductor /Intelligent Infrared welcome alarm, greet guest device/anti-theft / Induction doorbell/ Shop infrared welcome alarm, Welcome Doorbell /Wireless Electronic Anti-theft Alarm (White) + three AAA batteries + a dual Charger HKNDM352 GENUINE Eholder PRODUCTS ,Don't buy fakes from unauthorized sellers. Intelligent greeting warning doorbell, welcome your guests with beautiful song automatically Door chime trigger by motion, keeps you aware of intruders or visitors anywhere around your home Light control distance is 1-10 meters.The chime is triggered by detecting the motion of the visitor passed by Selector switch to select human voice or different music/sound, music selection button to change the music/sound