Don't worry about plugging in during someone else's flight with the Lumenier LC Filter + VTX Power Switch Module, designed for the Mini Razor Pro 4in1 ESC. This tiny board allows the user to bind a switch on your radio to power on and off your VTX (or other accessories).
The LC filter acts as an additional level of power management, reducing the effect of voltage spikes on your FPV equipment. Motors and ESCs can introduce a good deal of interference to your FPV system. An LC filter acts to normalize the voltage spikes and reduce added noise into your sensitive FPV equipment.
1 x Lumenier LC Filter + VTX Power Switch Modular Board for Mini Razor Pro