Walmeck Display Water Meter Digital Shower Bath Water- Measuring Instrument with 5~85 / High Accuracy Shower Bathroom Accessory

Built-in electricity generator, self generating power-supply, makes it need no batteries to work. High- sensor, accurately measures the of water ranging from 5C-85C with 0.5C error. It is easy to install and remove, with no tools required; 12 inch nut is compatible with most of the shower equipment. display, 360 degrees rotatable, easy to observe, shows the indicator (blue/ green/ red) to help choose suitable water . Digital shower , eliminates worry o