The Delta-T Devices WET150 Sensor measures soil moisture, temperature and electrical conductivity (EC), and is the product of over 40 years’ development expertise. Through a series of recent design innovations it delivers a research-grade level of quality at a price point not previously possible. The WET150 provides an SDI-I2 enabled solution for real-time monitoring of growing conditions. SDI-12 is an interface for connecting digital sensors to an SDI-12 master device such as a logger or irrigation controller. A key strength of SDI-12 is that it supports the connection of up to 62 sensors to a single input on a compatible device.