No risk of anyone crossing this BRIO train track unseen with this magnetic bell signal for your wooden railway set. When a train passes the bell rings. No need for batteries as it's all magnetic. BRIO creates innovative, high-quality and well-designed toys with clean, simple designs that spark children's creativity and imagination while encouraging and supporting each stage of their development. For over a century, our mission has been to create happy childhood memories. All wooden parts are made from 100% FSC-certified beech wood from sustainably managed forests and are built to last for generations.