he TP-DCDC-2448GD-HP DC to DC converters offered by Tycon Power Systems are a low cost and high reliability solution for those requiring 48VDC Power Over Ethernet voltage from a +/-24V battery system. The PoE inserters are 802.3af/at compatible. They have an integrated Gigabit PoE+ injector to apply the regulated 56VDC to the CAT5 Ethernet cable. The input voltage must be between 18VDC and 36VDC. They accept data-in to a shielded RJ45 Jack and provide data-out and PoE power on the shielded RJ45 output jack. They work by supplying power on the Ethernet pins 4,5(V+) and 7,8(V-). They have various protections for surge, short circuit and overload. The units have power output of 35W.