Dahua LM55-S200 Hight Protective Series Signage display is Suitable for continuous 24/7 operation. Using tamper-proof metal housing. 6ms response time for no motion blur, judder or ghosting. High fidelity digital processing for a brilliant and vivid video. With an 178°/178° wide uninterrupted viewing angle. Professional thermal design to extend equipment lifespan. Built-in speakers, low energy consumption. Support multiple signals, such as HDMI, VGA, USB multimedia, Audio, RS232