The Platinum Tools TPS200C is an easy-to-use, pocket-sized tester for all varieties of PoE - up to 56 volts and 280 watts of power. Powered by the PoE circuit, the TPS200C requires no batteries, and can be used inline with an actual PoE device to measure current flow, or by itself in Powered Device (PD) Simulation mode to determine the maximum power available from the PoE power source.