◂Three-Color Prompt Water Temperature Range: When the water temperature is suitable, the indicator light is green; blue when the water temperature is too low; red when the water temperature is too high. ◂Convenient Use: Monitor bath temperature effortlessly with no batteries required. Built-in water current generator generates current as long as there is waterflow, displaying temperature when water is turned on. ◂To Change the Temperature Unit Easily: With a 360-degree rotatable display, clearly visible from any angle, and C/F switching to meet different needs, press and hold the side button for 2 seconds to change the temperature unit easily. ◂Advanced Convenience: Easily monitor your shower temperature with the reverse LED display and waterproof design of our shower temperature meter. The higher clarity LED screen and faster response time give accurate readings without needing a light source. Monitor the water temperature in real time to bring you and your family a relaxing bathing experience.