Why we need Wi-Fi Android Digital signage controller?
1. Come with Wi-Fi function, support mobile APP wireless release programs.
2. Support multi-screen splicing display
3. Support multi-screen playback synchronously
4. Optional 4G module
5nternet remote management
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HD-M21 is an Android smart motherboard used for LCD advertising, it come with Wi-Fi function that can support mobile APP wireless release programs, support multi-screen splicing display, playback synchronously, and so on.

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