General description No Battery Needed: This LED Digital Shower Temperature Display features a built-in small-scale hydroelectric system that generates power, eliminating the need for batteries and the risk of power leakage. It automatically shuts off after no water flow, ensuring energy efficiency. The 360° rotating LED temperature display allows for real-time monitoring of shower temperature from various angles, making it ultra-practical, especially for families with babies. Technical specifications Measuring range: 0~100°C Accuracy: ±0.5°C Display: Celsius/Fahrenheit selectable Connection: 1/2 inch nut Installation Compatible with most shower equipment Easy installation without any tools required