SYMBOL FOR DEVICE CONTROL FOUR is one of the 64 characters in the Control Pictures Unicode subset.
The image below shows how the SYMBOL FOR DEVICE CONTROL FOUR symbol looks like in some of the most complete UTF-8 fonts: Code2000, Sun-ExtA, WenQuanYi Zen Hei and GNU Unifont. If the font in which this web site is displayed does not contain the SYMBOL FOR DEVICE CONTROL FOUR symbol, you can use the image below to get an idea of what it should look like.
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