Throb generates clock/reset signals synchronised with the host tempo.
It will synchronize your DAW with other hardware clocks.
The user interface is pretty simple: a knob to set the multiplier and three radio buttons to configure the clock resolution.
The multiplier is an automation parameter and therefore can be controlled using the respective host functionality. Both the multiplier and the resolution (ppqn) settings are serialized to the preset chunk.
You won't need a DC coupled audio interface, but please avoid sending the output of the plugin directly to your speakers/headphones.