... network optional 4.Touch screen/motion sensor optional 22 inch lcd wall mount advertising player ,custom size available 17inch to 55inch .dropshipping ... caption is showed at the bottom, top and sideway of LCD screen in the advertisement program.12. Build-in clock ... supply: AC 110V~240V, 50/60HZ 22inch digital signage lcd wall mount advertising player for supermaket ,hotels,3g/wifi/network advertising ...