These Arduino-compatible Analog ORP Sensors effectively measure important criteria in water, like chlorine levels or other potentially harmful contaminations.
This laboratory grade Analog Electrical Conductivity Sensor is a K-1 sensor for quick quality measurements of common liquids.
This industrial-grade Analog pH Sensor comes in a Pro Kit for, to make it conveniently compatible with Arduino for ultimate ease-of-use.
The SEN0161 pH Sensor V1.0 by DFRobot is Arduino Compatible, and allows you to measure precise pH levels of acidic, alkaline and neutral solutions.
The SEN0161 pH Sensor V2.0 is an Arduino compatible kit for quickly and accurately measuring pH levels for both hobbyist and professional applications.
This Analog TDS Sensor is Arduino compatible and measures the total dissolved solids in water, for healthy hobbyists who like healthy water.
This fancy little Non-Contact Digital Water Level Sensor uses clever capacitance to accurately measure water levels from the outside of a container.
This Analog Capacitive Soil Moisture Sensor is perfect for monitoring moisture levels for gardening, farming or just “Garden Variety” experimentation.
This clever Water Sensor Module uses variable resistance to measure water levels, as well as the size of drops and droplets within a system.