You'll need a transistor to sink 1.2A to energize the solenoid.
N-channel MOSFET would be good. A diode to go across the coil of the solenoid to dissipate the burst of current generated in the solenoid when you turn the transistor from On to Off.
And from the product description I can see that the voltage is dc12v, and current is 1.2A.
What kind of battery will I need to make this work?
What about a resistor? should I calculate R=12voltages /1.2amps = 10ohms?
Anything else i'm missing?
Hi. Once u define how to drive the mosfet ull get more materials to buy. Dc has to be battery? If not then think of a proper dc power 12v included in your list and if necessarily has to be battery try to find lower voltage bolt lock if possible