Application: Ideal for various water environments including swimming pools, aquariums, hot Spring, drinking water, and hydroponics, providing Accuracy residual chlorine and temperature for water management Included Features: Comes with a replaceable electrode probe and operates on 4x1.5V LR44 batteries, ready for immediate use in water testing scenarios Cores Functionality: Features a high sensitivity electrode with detachable design, measuring residual chlorine ( 0 4.00Ppm) and temperature ( 0 60°C / 32 140°F) simultaneously for accurate and Stable readings Design and Durability: Compact and lightweight housing ensures waterproof and shockproof, making it suitable for long term use in humid conditions without Erosion concerns User Friendly operate: Equipped with a high contrast LCD screen with backlight for clear day / night readings, automatic shutdown after 5 minutes of inactivity to conserve battery life, Manufacturer: RGYBAO