19
If you use an HDMI cable to connect, please check whether the sound
playback device column is set as the default HDMI device.
(5)
As the number of smart touch pens equipped with the product is
limited, is there any object that can be used to replace the touch pen
for flexible writing without scratching the screen?
You can temporarily use your fingers to replace writing; in addition,
if you need to buy, you can also scan the QR code of the WeChat official
mall on the surface of the interactive blackboard to place an order to buy
consumables such as touch pen tips
6
How to deal with inaccurate touch?
If this happens, please turn on the computer system and follow the
steps below: Click the control panel-enter the Tablet PC--click reset--click
calibration--click the OK button.
7
Is it normal for the screen to overheat after a period of use? Will it
affect the normal use of the device?
This is a normal phenomenon, just like a TV, there will be no adverse
effects. At present, we are the industry standard setter, and the heat
dissipation technology of our product is leading in the industry and meets
national health standards.
8
Will long-term use of the product damage the eyes?
The human eye can detect and recognize flicker below 50 Hz. In this
case, the eye muscles will constantly adjust to adapt to the flicker causing
eye fatigue. Our products use 60Hz and 120Hz LCD screens, so the human
eye can't actually feel the flicker of our screen. Compared with other
products of the same kind, this can reduce eye fatigue to a large extent
and meet the requirements of the international standard IEC62471.
9
Why doesn't the smart classroom interactive blackboard have a
