yes theres a little plunger in between the electrics and the shower.
according to gainsborough website it goes down if water pressure is ok.
the model is 9.5 se
Unfortunately they do not tell you if the neutral is ok ,or what the voltage actually is. Yes use a multimeter.
By the way Have no idea what that model is ,pic isn't clear.
Yes 230/240 volts is what you should get.
