LED Display Home Water Faucet Shower Temperature Monitor Baby MAIN FEATURES No batteries requiredThe device harvests its energy from the water Quick and easy installation without any tools. Adding a voltage regulator (2.8v-5v) to prevent the water pressure from being too high to burn off the thermometer's circuit board, and also prevent the water pressure from being too low to work. (Applicable water pressure range: 0.04-0.08Pa) Easy to InstallConnects to standard 1/2" hose, easy to install and remove, portable size. Tips: please make sure your hose is able to be dissembled before order.The installation mostly can be finished in 5 minutes. Features of 360 Rotatable Display for easy viewing temperature from any angle. Elegant designhigh quality bathroom is ideal for home use, even the bathroom of a five-star hotel. Buy it now to serve and surprise your husband, wife or kids. (Especially for families having toddlers or babies) SPECIFICATION MATERIALS:ABSPC SIZE:Connect to standard 1/2 inch hose or shower head (most families and hotels standard); TEMPERATE RANGE:0.5 - 85 THREAD TYPE:1/2 Contains: 1pc household water faucet shower temperature monitor+1pcWaterproof gasket with filter