Allows you to test the conditions of 802.3af/at standard and non-standard PoE cabling and ports on PoE equipment. Tests for power supply voltage, polarity and crossover mode, plus displays power consumption of connected DC devices such as cameras or other PoE enabled IoT products. Checks for short circuit, crossover and open circuit status in network cables. It also allows loopback testing to the connected PoE switch for checking the integrity of cabling.