LEGO "LIGHT BRICK" pieces LIGHTS & SOUND siren laser & barricade

This is a grouping of LEGO pieces starting with a red and white crossing arm barricade suitable for train track crossings or guard station checkpoints. The next 2 pieces are LEGO LightBrick pieces which make any creation come to life. First the yellow laser* which can be mounted then activated by touching the button on the back end (see pics) causing it to emit a yellow beam. Similarly, you will also get the siren which has alternating flashing blue lights as well as the sound of a police car's siren, all of which can be activated by pressing the button in the center.LEG30 ideal for everyday use. superior materials and excellent craftsmanship ensure long-lasting durability.