Programmable soft start for helis and airplanes.Programmable low voltage cutoff with settings for 3-cell Li-Po (9V), 4-cell Li-Po (12V), 5-cell Li-Po (15V), 6-cell Li-Po (18V) or 70% of battery starting voltage.Safe power-arm mode prevents accidental starts.3–6S Li-Po, 9- to 18-cell Ni-Cd/Ni-MH input voltage.