Help change shower habits from long to short showers and save resources. Overview Encourage efficient showering with the Stop In Time shower timer. This timer is an easy, inexpensive way to save water and save energy by providing a way to monitor and reduce showering time. The Stop In Time shower timer comes with a suction cup to set it up on you shower wall. At the beginning of a shower, simply rotate the Stop In Time shower timer to activate the hour glass style sand timer for an approximate 5 minute shower time. When the sand has traveled from one cavity to another, you know enough time has elapsed and you should be clean and out of the shower.