• RXW-SMD-900
  • Usually ships in 2-3 weeks



  • Measurement range:
    • 0 to 0.570m³/m³ (volumetric water content) in soil
    • -0.659 to 0.6026m³/m³ extended range
  • ±0.033m³/m³ (±3.3%) accuracy
  • 0.0008m³/m³ (0.08%) resolution
  • 33.81oz (1L) volume of influence
  • Wireless mesh self-healing technology
  • 1,500 to 2,000ft (450 to 600m) wireless range
  • Up to 50 wireless sensors per network


The HOBO RXW-SMD-900 wireless soil moisture sensor integrates the field-proven ECH2O 10HS Sensor and provides readings directly in volumetric water content. The 3.9in (10cm) probes measure soil moisture over a larger volume of soil, helping to average out any soil variability. The sensor's high-frequency design minimizes sensitivity to salinity and textural effects, and gives it a wide measurement range. Sensors are preconfigured and ready to deploy.

The sensor is designed to work with the HOBOnet Wireless Sensor Network in which data is transmitted wirelessly from sensor motes across the network either directly to the RX3000 station or passed through other wireless sensors back to the central station. Data is then uploaded to HOBOlink web-based software, which allows you to monitor sensor readings, view graphs, set up alarms, download data, and more.


This product can be used in the following applications: