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Sensor Powering Options  
AC Power 
The unit can be powered with AC power.  An AC-to-DC power supply converts from AC to 12V 
DC.  
 
Power-over-Ethernet (POE) Injector 
The unit can also be powered with Power over Ethernet (POE).  In this configuration no AC 
power is required near the Sensor.  This is ideal for applications that are not near normal sources 
of power, such as above a false ceiling or high on a wall.   
 
AirMagnet POE uses existing CAT 5 cable to carry –48V DC power to the sensor. 
 
Note: AirMagnet’s power over Ethernet solution is compatible with AirMagnet power injectors.  
A future version will be compatible with the emerging IEEE 802.3af POE standard.  No plans 
exist for compatibility with Cisco’s proprietary pre-802.3af solution. 
 
 
Figure 2: AirMagnet POE Injector 
 
The POE injector has three ports and a single LED.  One port accepts a coaxial barrel connector 
that distributes 48V DC power.  One port is RJ45 and attaches to the incoming Ethernet cable 
which has no power.  One port is RF45 and attaches to the outgoing Ethernet cable which has –
48V power.
  
 
© 2004 AirMagnet
®
, Inc. All rights reserved. 
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