This simple device will gently remind users when it’s time to turn the shower off. To install, use either the suction cup or adhesive back to adhere the Showertime in a visible locaton on the wall of the shower. Press the bottom portion of the Showertime when you step into the shower, and a blue LED will illuminate. After 4 1/2 minutes, the blue LED will turn off and a red LED will begin flashing for 30 seconds, serving as a convenient reminder of the amount of time that has elasped.