The POE-INJ are a series of low cost Power Over Ethernet (POE) Inserters to insert POE power to a CAT5 Ethernet data cable on the unused Ethernet pins 4,5(+) and 7,8(-). The unique POE-INJ-LED has power on and current indicator LED's. The Power LED shows that DC power (12V to 24V) is being supplied to the inserter through the DC jack. The Current LED shows that a POE device is plugged in at the end of the CAT5 Ethernet cable up to 100m (330ft) away from the inserter.