|  			 Parameter introduction  			 |  			 			 |  			 			 |  			 			 |  		|||
|  			 Product Name  			 |  			 			 75 Inch School Educational Smart Board Ir Touch Interactive Whiteboard  			 |  			 			 |  			 			 |  		|||
|  			 Material  			 |  			 			 Aluminum Alloy Frame  			 |  			 			 Screen Size  			 |  			 			 55''/65''75''/86''  			 |  		|||
|  			 System  			 |  			 			 Android/ Windows  			 |  			 			 CPU  			 |  			 			 intel i3/ intel i5/ intel i7  			 |  		|||
|  			 RAM  			 |  			 			 4G/ 8G/ 16G  			 |  			 			 ROM  			 |  			 			 128GB SSD/ 256GB SSD/1TB HDD  			 |  		|||
|  			 Windows OS  			 |  			 			 Windows 7/10 without license( license option)  			 |  			 			 |  			 			 |  		|||
|  			 Android  			 |  			 			 Android 6.0/ Android 8.0  			 |  			 			 |  			 			 |  		|||
|  			 Touch Technology  			 |  			 			 Infrared touch  			 |  			 			 Touch Points  			 |  			 			 10/20 points  			 |  		|||
|  			 Aspect Ratio  			 |  			 			 16:9  			 |  			 			 Viewing Angle  			 |  			 			 178°  			 |  		|||
|  			 Touch Life Times  			 |  			 			 Over 60,000,000 times  			 |  			 			 Touch Response Speed  			 |  			 			 8ms  			 |  		|||
|  			 Display Type  			 |  			 			 LED  			 |  			 			 Resolution  			 |  			 			 1920*1080/ 3840*2160 4k UHD  			 |  		|||
|  			 Brightness  			 |  			 			 400(cd/m2)  			 |  			 			 Contrast Ratio  			 |  			 			 5000:1TYP  			 |  		|||
|  			 Glass Type  			 |  			 			 4mm tempered glass  			 |  			 			 Glass Transmittance  			 |  			 			 95%  			 |  		|||
|  			 Port and power  			 |  			 			 |  			 			 |  			 			 |  		|||
|  			 Front Buttons  			 |  			 			 PC power button*1;Volume up*1;Volume down *1;Memu*1;Power on/off*1  			 |  			 			 |  			 			 |  		|||
|  			 Front Ports:  			 |  			 			 HDMI*1;Touch out*1;MV in*1;USB2.0*3  			 |  			 			 |  			 			 |  		|||
|  			 Back Ports(Ⅰ)  			 |  			 			 USB2.0 type B*1;USB2.0*2;HDMI*1;VGA*1  			 |  			 			 |  			 			 |  		|||
|  			 Back Ports(Ⅱ)  			 |  			 			 Exact ports info. depends on the model of OPS PC  			 |  			 			 |  			 			 |  		|||
|  			 |  			 			 DC(9V-12V)*1;MIC*1;AUDIO*1;LAN*1;USB3.0*2;USB2.0*2;HDMI*1;VGA*1  			 |  			 			 |  			 			 |  		|||
|  			 Power Of Display  			 |  			 			 178W  			 |  			 			 Standby Power  			 |  			 			 3W  			 |  		|||
|  			 Working Voltage  			 |  			 			 50-60HZ 100-250V  			 |  			 			 Working Humidity  			 |  			 			 5%-90%  			 |  		|||
|  			 Working Temperature  			 |  			 			 0~45℃  			 |  			 			 Storage Temperature  			 |  			 			 -20℃~60℃  			 |  		|||
|  			 Power Of Speaker  			 |  			 			 |  			 			 Life Time  			 |  			 			 60,000h  			 |  		|||
|  			 Accessories  			 |  			 			 Wall bracket/movable floor stand/pen/remote control/WIFI antenna  			 |  			 			 |  			 			 |  		|||
|  			 Warranty  			 |  			 			 12 months  			 |  			 			 |  			 			 |  		|||
|  			 Package  			 |  			 			 30mm thickness Honeycomb box  			 |  			 			 |  			 			 |  		|||













