If all you're going to do with them is open and close a gate, all that's required is a power source of 24 to 36 volts capable of 4 amps, and a DPDT switch. (12 volts will work, but will be very slow) Now, if you're going to have them move a BUD across the arc, that Vbox deal is going to be hard to beat. Come to think of it, for a bit of overkill, the Vbox could be programmed for full open, Closed, and a few intermediate positions on the gate. My gut says that they are Superjack brand.