There are a few different synonyms for the term "soil moisture sensor" that may be used, depending on context and regional language differences. One common alternative is to refer to these types of sensors as soil humidity sensors or soil water content sensors. Some people may also use the term soil moisture probe, or simply refer to the equipment as a soil sensor or moisture meter. Regardless of the specific wording used, the purpose of these devices is to measure the amount of moisture present in the soil at a given point in time, providing valuable data to inform irrigation, crop management, and other agricultural practices.