Figure 21: Attaching Keyhole Mounting Screw
3.
Place the two keyholes on the back of the device over the two mounting screws mounted on the wall, and
pull the device down slightly so that it hangs from the screws.
Cisco IG21 IoT Gateways, Cisco IG21R Rugged IoT Gateways, and Cisco IG31R Rugged IoT Gateways Hardware Installation Guide
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Installing the Gateway
Surface Mounting with Keyholes