LG LED 55" FULL HD DIGITAL TV 55LY340C FOR EFFICIENT MANAGEMENT- PUBLIC DISPLAY MODE FOR EFFICIENT MANAGEMENT- MHL (MOBILE HIGH-DEFINITION LINK) FOR EFFICIENT MANAGEMENT- USB CLONING FOR CONVENIENCE & ENTERTAINMENT- EXTERNAL SPEAKER OUT PUBLIC DISPLAY MODE From channel selection to energy-saving features, Public Display Mode allows you to control the TV settings in your business area prevent misuse by customers, set volume limits, or restore factory defaults on any TV. You are in control of it all.อ่านเพิ่มเติม