Multi-Depth Soil Moisture & Temperature Sensor

Introduction to Sensor

The Multi-Depth Soil Moisture and Temperature Sensor uses FDR technology to measure soil moisture and digital sensing to monitor temperature at multiple soil depths. Standard monitoring depths include 10, 20, 30, and 40 cm, with customizable layers to suit different crop and project requirements. Featuring RS485 Modbus RTU communication, the sensor integrates with data loggers, irrigation controllers, PLCs, and IoT gateways. It is ideal for precision agriculture, irrigation management, orchards, greenhouse cultivation, and long-term soil monitoring.

Specifications

Model	NBL-S-TMSMS
Measured Parameters	Soil Moisture + Soil Temperature at Multiple Depths
Standard Monitoring Depths	10 cm / 20 cm / 30 cm / 40 cm/ 50 cm/ 60 cm
Customized Monitoring	Additional depths available; up to 10 monitoring layers depending on configuration
Soil Moisture Range	Dry soil to moisture-saturated soil
Moisture Resolution	0.1%
Moisture Accuracy	±3% under laboratory conditions
Soil Temperature Range	-40 to 80°C
Temperature Resolution	0.1°C
Temperature Accuracy	±0.5°C
Moisture Measurement Principle	FDR (Frequency Domain Reflectometry)
Power Supply	DC 12 V / Solar Power depending on configuration
Communication	RS485
Protocol	Modbus RTU
Default Baud Rate	9600 bps
Device Address	0–255 configurable
Response after Power-On	Within approximately 3 seconds
Stabilization Time	Approximately 10 seconds
Tube Diameter	Φ63 mm
Sensor Length	Varies with monitoring depth; standard configuration approximately 1000 mm
Protection	IP67 above ground / IP68 below ground
Power Consumption	Less than 1 mA during sleep; less than 70 mA during sampling
Sensing Range	Most measurement response is within approximately 10 cm around the outside of the tube