Aquatec PSW-240 Tank Shut Off (TSO) Switch for Aquatec Booster Pumps

My dc 24v supply current is 1.2a. it's going to work? my pump is currently putting a 80 psi in the the system with the faucet opened. this wiil fit?

How does this connect to the transformer? Will it work with other brands other than aqua tech? I am considering a ronaqua one.

Where exactly is the marking of direction of flow? Is the "in" is on the red terminal lugs side?

does it shutoff pump if no water supply and tank is below 40 psi?