Hisense HAIO163 163" Full HD HDR All-in-One LED Commercial Display - Manual (Page 11)

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Switching on/off the OPS
After inserting OPS to the device, you turn on the device, change the signal source to enter OPS and stays on the
OPS syetem interface. When you turn off the device, you should use the standby button to go into standby mode,
the OPS module is switched off, and then you shut off the device.
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LED All-In-One User Manual