The Toro Tempus AG VH400 is a compact soil moisture sensor designed to integrate seamlessly with Toro's Tempus AG irrigation system. It provides accurate real-time soil moisture readings, enabling precise irrigation control to optimize water usage and promote healthy plant growth.

The VH400's small dimensions allow for installation close to the root zone or directly into pots without disturbing plant roots. It has an analog output which delivers a 0–3.5V analog signal, making it compatible with Toro's Tempus AG-MS Single/Multi Sensor Modules (S1 and S4).