Cisco Aironet 1800s Getting Started Manual page 13

Figure 4 Back of the Sensor – With PoE/Ethernet Module AIR-MOD-POE-xx
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Recesses on the back of the sensor into which
the hooks on the wall-mount bracket slide
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and click into place.
RS-232 console interface port, hidden under
a mylar label. You need to use the custom
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console cable AIR-MOD-UART-xx.
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