The overall designs is precise, and the back is easy to installation and use with adhesive sticker 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 Online water qualitys detectors: value detection for tap water online, with builtin single way interfaces Digital display screen, clear numerically values for easy reading, Manufacturer: jklymm