Online water qualitys detectors: value detection for tap water online, with builtin single way interfaces The overall designs is precise, and the back is easy to installation and use with adhesive sticker Digital display screen, clear numerically values for easy reading Detachable High Sensitivity Probes: A high precise and sensitive sensings probes that detects water qualitys and automatically compensates for temperature, reducing errors Detachable sensorings interfaces, easy to carry, Manufacturer: jklymm