motion sensor chime,alarm while people goes into a shop,store,hotel,etc ... ,Welcome" in 8 languages,25pcs melodies motion sensor chime,alarm while people goes into a shop,store,hotel,etc,say ... supply transformer of DC "4.5V,300mA";Battery Stand-By Time: 30-45 daysABS Environmental Material,conform to European, ... .OEM & ODM are both highly welcomed. Motion Sensor Alarm Say "HELLO,WELCOM" While People Pass ...