This is an illumination message display for overnight express buses, manufactured by Resonant Systems. - Display contents: Seatbelt use, Male, Female, No cell phones, No smoking signs - Model: NLB-304B - Connection terminals: With wiring connector (unprocessed) - Material: Metal ※ We have not confirmed the operation of this product, so please consider this with the understanding of its characteristics. ※ We will answer any questions you may have to the best of our ability.