- 1). Turn the SNAP PAC mounting rack's power off.
- 2). Take the module out of its packaging by hand; stand so you are lined up parallel to the mounting rack.
- 3). Align the module over its rack connector slot by hand; the small slot above the "OPTO 22" text of the module should be facing toward the left.
- 4). Push down gently on the module until it clicks in to install it to the rack.
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