Level sensor does not works

I have three different level sensor.
I put one ( optical ) to Level 1&2 socket.
And put one ( floater ) to Level3 socket.

But nothing.

I want setup auto fill system to my tank.
I need to enable power socket ( for example nmbr 6 ) in my power bar when water level in the tank is low.

Hello,
please post screenshots of your settings (Level, sockets, timer).