... voice and playback when someone pass by it. Other motion sensor is availbleMotion sensor:light,shadow,vibration,PIR,IR etcPower by :3pcs OF ... even if power off. 9.switch:slip switch,push button,light,light sensor,vibration,timing,tempreture,PIR, IR activated10.Application:dolls,stuffed ... recording to the end of playing12.OEM/ODM are welcome Motion sensor USB doorbell/music doorbell with motion sensor