We have found that the Phoenix PF276050 Air Fusion RV Handheld Shower Kit
had some misinformtaion with saying it had a Trickle Shut-Off Button when it really features a Flow Controller. The Flow Controller is an optional gadget, included with purchase of the showerhead, that lets you control the flow of water from full to a trickle, just turn it to the left or right. It will not completely shut off the water. We have updated the product on the site with this information.