how to measure ph in water sensor?

Water PH sensor

The PH water quality sensor is a sensor used to detect the concentration of hydrogen ions in the measured object and convert it into the corresponding available output signal. It usually consists of a chemical part and a signal transmission part.

how do ultrasonic wind sensors work?

Weather station

Ultrasonic wind speed and direction sensor is a kind of meteorological sensor that uses ultrasonic technology to measure wind speed and direction.

how does a rainwater sensor work​?

Rain sensor is a high-tech device used to measure rainfall. Its appearance greatly improves the accuracy and timeliness of rainfall monitoring, and provides vital support for many fields such as weather forecast, hydrology research and agricultural production.