The Profoto Acute2 2400 Generator is a heavy duty generator used by professional photographers worldwide due to its short recycling times, consistency of color temperature and output. This Profoto generator has many features that are appealing to professionals, such as dual voltage capability with a powerful 2400 W/S output, 6 f-stop range from 75W to 2400W, fast flash duration, a cooling fan which makes it more durable and a built in photo cell that allows the "slave mode". The power can be distributed up to 3 flash units.