Introduction
The RS485 Soil Sensor is designed for real-time monitoring of soil temperature and humidity, ideal for large-scale agricultural applications, greenhouse management, and fruit orchards' automatic irrigation systems. Utilizing the MODBUS-RTU protocol via RS485 communication, the sensor provides reliable and fast data acquisition with a wide voltage range of 5-30V, making it compatible with various irrigation and climate control systems. Easily integrate it with Arduino UNO and TTL-to-RS485 expansion board for efficient test environment setup. Its robust construction features an IP68 protection level and a 316 stainless steel probe, ensuring durability in harsh environmental conditions.

The protection level of the soil sensor is IP68, and it is vacuum-filled and sealed with black flame-retardant epoxy resin. The probe material is made of 316 stainless steel, which is rust-proof, waterproof, anti-corrosion, salt-alkali corrosion resistance, and long-term electrolysis resistance. It is more affected by the soil salt content. It is small, can be buried in the soil for a long time, and is suitable for various soil types.
Soil sensors are widely used in agricultural irrigation, greenhouses, flowers and vegetables, grassland and pastures, soil rapid testing, plant cultivation, scientific experiments, grain storage and the measurement of moisture content and temperature of various particulate matter.

Soil temperature has a direct impact on plant growth. Proper soil temperatures help promote plant root growth and the ability to absorb nutrients. Generally speaking, higher soil temperature is helpful for plant growth because it can increase plant metabolism, promote nutrient absorption and transport, and increase plant microbial synthesis capabilities, thereby promoting plant growth rate and yield.

In addition, appropriate soil moisture helps plant roots absorb water and nutrients and maintains water balance within plant cells. If the soil moisture is too low, plant roots will be limited in absorbing water, which can lead to plant dehydration, stagnant growth or even death. Excessive soil moisture may cause hypoxia in plant roots, hinder normal respiration and nutrient absorption of roots, and thus affect plant growth and development.

Features Wide Voltage Range: Supports 5-30V power supply. RS485 Output: Compatible with Arduino and other systems. Fast Response: Ensures timely data retrieval. Stainless Steel Probe: Designed for long-term burial in soil or water. IP68 Protection Level: Vacuum-filled and sealed with flame-retardant epoxy resin.

Features

Wide Voltage Range: Supports 5-30V power supply.

RS485 Output: Compatible with Arduino and other systems.

Fast Response: Ensures timely data retrieval.

Stainless Steel Probe: Designed for long-term burial in soil or water.

IP68 Protection Level: Vacuum-filled and sealed with flame-retardant epoxy resin.

Specification

Power supply voltage: DC 5-30V

Power consumption: 0.5W@24V

Output mode: RS485

Detection parameters: Temperature, Humidity

Humidity parameters

         Measuring range: 0-100%

         Resolution: 0.1%

         Accuracy: 0-50%@±2%, 50-100%@±3%

Temperature parameters

         Measuring range: -40°C~+80°C

         Resolution: 0.1°C

         Accuracy: ±0.5°C

Protection level: IP68

Probe material: anti-corrosion special electrode

Sealing material: black flame retardant epoxy resin

Working temperature: -40°C~+60°C

Cable length: 2m

Size: 123*45*15mm