The faucet determines whether water will be sent to the showerhead. In the middle, water comes out of the faucet, and if you turn it 90 degrees to the right, it sends water to the showerhead.
This mechanism is a joke. After a month, without forcing it, you have to turn the faucet 120 degrees to send water to the showerhead, resulting in not having enough space to do so because it hits the wall. And when you bring it back to the middle, it doesn't stop at any position but keeps turning to the other side.
As if that wasn't enough, after 6 months, the cap right behind the mixing lever came off and didn't allow the battery to work.
Waste of money.
A Christmas battery from a bad year.
For this money, get something more quality, less futuristic from a store that knows their own products from the same company because before buying it, I called them and they told me that switching from faucet to showerhead is done with a button on the side.
But that's how it is when you buy plumbing from the internet.