The Djois 'hearing protection mandatory' warning sign provides additional safety in noisy environments. This eye-catching sign clearly indicates that hearing protection is required, which helps protect the hearing of employees or visitors. The sign is made of wear-resistant and maintenance-free material, so it will last a long time without loss of quality. It is easy to attach and resistant to chemicals, extreme temperatures and weather conditions. With a diameter of 200mm, it fits perfectly in any space and is always clearly visible.