Reference:
POE-E201
PLANET POE-E201 is a newly designed simple device which extends both the reach of Gigabit Ethernet Data and IEEE 802.3at / 802.3af Power over Ethernet over the standard 100m (328 ft.) CAT. 5/5e/6 UTP cable to 200m, 300m, 400m and maximum 500m (with 4 units, daisy-chain installation with 500m support). PoE Power Output 52V DC, 510mA, Max. 26 watts.