Power over Ethernet Power Supplies

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The second style is shown below, the Cisco AIR-PWRINJ system. It is just a power supply and injector, it is designed to power equipment that draws 48 volts directly from the ethernet cable.

	Cisco AIR-PWRINJ Single Port Ethernet 48 volt power injector, 125 mA, 6 watts	Note: this is tested equipment taken out of service.
	To connect the barrel connector from the 48 volt power supply you need to pry the unit open with a screwdriver and thread the DC power cable through the strain relief.	Identical in performance to the 350 series power injector

Prices

Quantity	1-10 pieces	11-50
48 volt power supply 400 mA when sold separately PST-SA06-48VNo longer available
Cisco AIR-PWRINJ single port ethernet injector (requires an external power supply such as the one below)	$12.75	$10.75
48 volt power supply 200 mA for the AIR-PWRINJ PST-AIR-PWR-A	$22.00	$19.50
48VDC 750mA switchmode power supply click here

	Sending Unit	Receiving Unit
Size	53 x 42 x 25 mm 2.1 x 1.75 x 1 inch	80 x 53 x 25 mm 3.2 x 2.1 x 1 inch
Weight	1.1 Oz., 30g	2.2 Oz., 60g
Ethernet Connectors	RJ-45	RJ-45
Power Connectors	5.5 x 2.1 mm Barrel	5.5 x 2.5 mm Barrel


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Power over the ethernet, inexpensive power over ethernet power supply, EEE802.3AF