Shut down or force shutdown on an SYH device

How to safely shut down or force shut down SYH devices

SYH Leader L6 SYH Leader L6
SYH Leader L5 SYH Leader L5
SYH Leader L3 SYH Leader L3
SYH Leader 6 SYH Leader 6
SYH Leader 5 SYH Leader 5
SYH G6 SYH G6
SYH Forward f5 SYH Forward f5
SYH Forward f2 SYH Forward f2
SYH F3T SYH F3T

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