Abstract: The described invention embodies a plumbing fixture device for the determination and display of exacting control adjustments necessary to achieve a predetermined fluid temperature blend. The device of the invention employs an apparatus constructed of a set of manually operated fluid control valves with an enclosing valve body, and a temperature mixing indicator consisting of an electronic signal indicating means to translate and communicate sensed fluid discharge temperature into display indications depicting the need for a specific corrective control action by the operator. The electronic signal indicating means is an integral part of the fixture which for reasons of reliability is electrically activated by a fluid flow switch mechanically linked to the fluid control valve handles and provides a positive sequence of display indications that culminate in a quiescent state when the desired temperature range has been obtained.

Abstract: This invention relates to a system to provide a controlled temperature mixing of two or more fluids by an immediate visual indication of necessity for particular adjustment, and achievement of a predetermined fluid blend temperature range. The device includes plumbing fixture apparatus comprising a set of manually controlled hot and cold fluid mixing valves and an integral fluid flow activated temperature sensor with electronic translation of fluid temperature imbalances between sensed blended fluid temperature and predetermined temperature values. A fluid temperature imbalance will cause illumination of a particular fluid control valve handle or handles to acknowledge and obtain corrective fluid temperature control by manually adjusting the fluid control valves until the proper fluid blend temperature range is achieved.