FAMOSI screwdriver FST0008 T8*80MM

.Test the information of the standard PoE device, such as af t standard, power supply voltage, power supply polarity and mode.
· Identify the supply voltage, power supply polarity and mode of non-standard PoE devices.
· Check the short circuit, crossover and open circuit status in the network cable.
· Test the current, voltage and power consumed by DC appliances.
. The loop-back test function of the switch.