In the real world both computerized (high-intensity) flash and manual low-intensity blend are equally effective for permanent hair removal. To the best of my knowledge, no single machine is available that offers both techniques. Aside from owning two machines, the electrologist must choose which approach better suits their business and buy accordingly. I am currently debating which route to go.
There is a machine that allows you to work manually or through the application of automatic pulses that you have previously configured. It's the Elite Spectrum of Instantron. At the push of a button, the system switches from manual (where you have timer control) to automatic mode (with which the current will continue to flow until the pre-programmed pulse duration ends).
The only drawback of this machine is that it does not include a clock that controls the treatment time.