Yup, and it unlocks the doors by sending a 12 volt electrical current from the car’s battery to a little electric motor at each door that spins a gear attached to a rack (a rod with gear teeth) that tugs a rod that moves a pin out of the way of the door latch so it will open when the handle is pulled.
You lock it by spinning the motor the other way so the pin is inserted to block the latch from un-latching.