Jollytronic Wirquin No Touch 100% Hygienic Hands Free Infrared Close Coupled Toilet Cistern Complete Fitting Kit Bottom Supply

Does this include the infrared red, or is just for the bottom part? Will it work on front rather sit on top of the cistern? Thank you.

Can you please confirm that this item will fit a 1.5 inch outlet ?

Can you temporarily disable the sensor for cleaning purposes or do you have to put up with it flushing a few times while you're cleaning it?

Works well but my sensor range is only about 2 inches (5 cm). Is there a way to tune or improve this? I am using brand new Duracell batteries.