Building smart digital signage — Wanlin AndroidSBC, 12-year Chinese building advertising Android motherboard manufacturer, WL-BA400 (RK3566 Dual-Display Elevator Signage Board) certified CE/FCC/RoHS. Rockchip RK3566 quad-core Cortex-A55 1.8GHz + 0.8 TOPS NPU + Mali-G52 + 4K@60fps + 2GB/4GB. MOQ from 50 units, OEM/ODM from 500 units, 12-15 day delivery, 60+ ···