Applications: About 300cm Long Cable Length; Suitable for wide range of application: aquariums, hydroponics, laboratory etc. Great for student, professional and even personal used in achieving the correct pH and temperature level in water quality monitoring and analysis Function: pH meter is an electronic device used for measuring the pH which is either the concentration of hydrogen ions in an aqueous solution or the activity of the hydrogen ions in an aqueous solution Medium: Work in liquids though special probes are sometimes used to measure the pH of semi-solid substances BNC: BNC Connector, compact, lightweight and portable, suitable for most pH meter and controller with BNC connector. pH Display: The pH will indicate if the solution is acidic or basic, but is not a measure of acidity or alkalinity. A pH meter consists of a special measuring probe (a glass electrode) connected to the body which measures and displays the pH reading