Q: Do you have to use both a battery and 110V AC line for the SKC-600DC?

A:  Yes.  You do have to use the battery and AC for the gate opener to function properly.    The battery is inside of the motor housing cover behind the black cover that conceals the circuit board. Solar power can also be sumplemented for AC. 

Q:  It says you wire the AC line into the POWER INPUT.  So I unscrewed the little white box where the power input is and there are 3 slots marked U, V and W. The manual does not say which one (U,V,W) takes the black wire, white wire, etc. from my AC power...do you know?

A:  Your wires are interchangeable black or white.  They plug into that block wherever the other two wires are already attached to the other side of the block.  You may attach your ground wire to the base if you choose, but it is not required.

Q: How do I check magnet alignment on my SKC-600DC?

A: Remove your magnet from the gate and hold it in your hand.  Remove the blue cover from your control box.  Face the control box so that the battery cover is facing toward you.  Press the button on your remote control to activate the gate.  With the magnet in your Right hand, slowly run the magnet up the Right side of your control box just until it causes the motor to stop.  Hold the magnet there and press the button on the remote control again to activate the motor.  Run the magnet up a little more until it stops the motor.  If the magnet fails to stop the motor in either of those positions, then the magnetic switch is malfunctioning.  If it works, then the magnet needs to be adjusted when reinstalled onto your gate.