lots more data is needed.
latching relays on that data sheet offer either a single coil. you use an H-bridge to revere power
and it shows two coils. one to set one direction, the other for the second direction.
-U is a single coil, you alter ground and power
-K is 2 coil, you need to bring one to ground to make that side work.
very easy to use two coils. but you need two pins from your Arduino.
YOU CANNOT POWER DIRECTLY from the Arudino.
at 5V each coil uses 150 mA.
you must use a transistor. very easy, couple of cents for a transistor, resistors and the required diode.
power goes to the relay coils, always hot.
you only close the circuit on the coil you want to power.
only needs a few ms to power the coil.
