LPH65-ST420 65 inch Smart interactive whiteboard > 65-inch 4K DLED display with Zero Air Gap technology that delivers a clear image in sharp, vivid colors. > Wireless screen sharing from multiple devices with an intuitive, easy-to-use system. > 8 physical front buttons for quick access to functions. > Smooth writing experience, and handwriting recognition. > Quick file sharing by scanning a QR code, with easy file encryption for added privacy and security. > Switches between Android and Windows, and OPS module is optional.   Specifications: Built-in System Operating System Android 11CPU Quad-core A55CPU Frequency 1.9 GHzGPU ARM Mali-G52 MP2 (2EE)RAM 8 GB (optional 4 GB)ROM 64 GB (optional 32 GB) LCD Panel Panel Dimensions 65 inchBacklight DLEDAspect Ratio 16:09Brightness 400 cd/m2 (typ. )Contrast VA: 4000; IPS: 1200Resolution 3840 × 2160Viewing Angle 178° (H) / 178° (V)Lifespan 50,000 hoursDisplay Color 1.07 BResponse Time 8 ms (typ. )Refresh Rate 60 Hz Device Ports Light Sensor YesFront Button 8 buttons (power, home, menu, signal source, touch lock, curtain, volume, and annotation)Front Ports Type C × 1 (4K@60 Hz, Touch)
HDMI In × 1 (4K@60 Hz)
USB 3.0 Type-B × 1 (Touch)
USB 3.0 Type A × 2
Mic In × 1 (3.5 mm port)Rear Port Type C × 1 (4K@60 Hz, Touch) 
HDMI In × 2 (4K@60 Hz)
VGA In × 1 (1080p@60 Hz)
USB 3.0 Type-B × 3 (Touch)
HDMI Out × 1
USB 3.0 Type A × 2
Micro USB × 1
RS-232 × 1
RJ45 In × 1
RJ45 Out × 1
Audio In × 1 (3.5 mm port, used to play sound with VGA)
Audio Out × 1 (3.5 mm port)
SPDIF Out × 1 (Optical port)
OPS slot × 1 Function IR Receiver YesBluetooth Bluetooth 5.2Wi-Fi WIFI 5, 2.4 GHz/5 GHz; Integrated WiFi 802.11 b/g/n/ac, supports PEAP/EAP-GTC authentication protocol within 802. lXWireless Access Point WIFI 5, 2.4 GHz/5 GHz; Supports enabling Hotspot and Wi-Fi at the same time Touchscreen Touch Technology Type Infrared touch technologyAttachment Method Zero Air GapResponse Time ≤10 msTouch Points Android: 32, Windows: 40Touch Accuracy ± 1 mm (over 90% Area)Valid Touch 2 mmTouch Height

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