Abstract: A temperature indicator for a fluid fixture, such as a faucet, is adapted to be mounted on the fixture. It can be mounted within the handle of a faucet and can be stationary while the handle rotates. It includes a temperature probe which is subject to temperature of fluid flowing through the fixture. A power supply, for example solar cells, and electric circuit means are provided. A display device is connected to, and driven by, the electric circuit, and is arranged on an external surface of fluid fixture. The display device indicates the temperature sensed by the temperature probe.