Abstract: The present invention relates to a shower monitor to alert a person how long they have been in the shower by emitting a short audible sound at preset intervals and by emitting a continuous audible sound when a preset time limit has been reached. The shower monitor is provided with security features to prevent unauthorized users from by passing the device. The monitor may have a liquid crystal display providing a visual indication of the time remaining. The monitor has a thermal sensor for activation of a timing cycle. The monitor may employ a flow sensor in combination with or in lieu of the thermal sensor for activation of the timing cycle.