motion sensor chime,alarm while people goes into a shop,store,hotel,etc,say "Hello,Welcome" in 8 languages,25pcs ... melodies motion sensor chime,alarm while people goes into a shop,store,hotel,etc,say "Hello,Welcome" in 8 languages,including ... power supply transformer of DC "4.5V,300mA";Battery Stand-By Time: 30-45 daysABS Environmental Material,conform to European,American ...