The Si hardware can be mounted vertically or horizontally on a DIN rail
(also known as a cap rail or top hat rail outside of Europe). The DIN rail
clamps shipped with the unmodified Si hardware have already been
assembled. Mounting the device on DIN Rails:
1. When mounting the hardware on
the rail, the rail clamp side with
the spring must be on top.
2. Insert the clamp into the rail from
above.
3. Then press the lower part of the
Si hardware to the rail until the
rail clamp catches in the rail.
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