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A robust sensor for approximate measurement of nitrogen, phosphorus and potassium (NPK) levels in soil, ideal for precision farming and field applications. With a rugged design (IP68), RS485 MODBUS-RTU communication and a wide power supply range, it allows easy integration with Arduino-type systems and operation in harsh environmental conditions. DFRobot SEN0605
The Soil Sensor is an advanced sensor designed to measure the levels of nitrogen (N), phosphorus (P), and potassium (K) in soil, supporting the optimization of soil fertility and creating ideal conditions for plant growth. With a wide power supply range of 5 to 30 V and data output in the RS485 MODBUS-RTU format, the device is compatible with Arduino UNO and TTL to RS485 converters, making integration easy. The sensor is made from high-quality 316 stainless steel, resistant to corrosion, salt, and long-term electrolysis. Hermetically sealed with epoxy resin, it achieves an IP68 protection rating, allowing for long-term burial in soil or immersion in water.

The sensor is suitable for precision agriculture, greenhouses, vegetable and flower cultivation, pastures, as well as scientific experiments and grain storage. Thanks to its compact dimensions and environmental resistance, it can operate in various soil types without losing accuracy. Measuring NPK enables better fertilization tailored to plant needs, improving yields and crop quality. However, the sensor should be treated as an indicative tool—it does not replace professional laboratory instruments but provides effective support for soil condition monitoring.
Manufacturer BTC Korporacja sp. z o. o. Lwowska 5 05-120 Legionowo Poland sprzedaz@kamami.pl 22 767 36 20
Responsible person BTC Korporacja sp. z o. o. Lwowska 5 05-120 Legionowo Poland sprzedaz@kamami.pl 22 767 36 20
Waterproof soil moisture sensor with analog output. The probe has a pointed tip, which allows it to be easily inserted into the ground. It is supplied with the voltage from 3.3V to 5.5V. DFRobot SEN0308
UART-RS485 converter module. It enables communication of Arduino boards with industrial modules. DFRobot DFR0259
Sensor dedicated to the measurement of nitrogen content in the soil. Allows you to monitor and analyze the level of the element in the soil, and thus optimize fertilization and improve cultivation processes
Soil moisture sensor with analog output. It has a probe with pointed tips, which allows you to easily place it in the ground. The analog output voltage level increases in proportion to the humidity level
Seeed Studio 101990982 is a professional RS485 soil sensor that enables simultaneous measurement of moisture, temperature, and electrical conductivity at four different depths. With its robust design and IP68 protection, it is suitable for long-term applications in agriculture, greenhouses, and environmental monitoring, providing reliable data for irrigation and crop optimization.
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Waterproof soil moisture sensor with analog output. The probe has a pointed tip, which allows it to be easily inserted into the ground. It is supplied with the voltage from 3.3V to 5.5V. DFRobot SEN0308
Earth humidity sensor with analogue output, supplied with 3.3 to 5.5 V voltage with Gravity connector. DFRobot SEN0193
Capacitive soil humidity sensor with I2C interface powered by 3-5V. Adafruit 4026
Soil moisture sensor dedicated to micro:bit. It is supplied with the voltage from 3.3 V to 5 V and communicates via an analog signal. SparkFun SEN-15272
Soil moisture sensor with analogue output. It has a shape resembling a fork, which makes it easy to put it in the ground. The voltage level of the analog output increases in proportion to the ground moisture level. The sensor can be used in an automatic watering system. Version with a 3.5 mm ARK connector. SEN-13637
Resistive soil moisture sensor. The board is equipped with a Grove connector and communicates via an analog interface. Seeed Studio 101020008
The FC-28 sensor is used in automatic irrigation systems, IoT projects, and educational experiments involving soil moisture measurement. It enables accurate monitoring of crop conditions and optimizes water consumption
Capacitive soil moisture sensor with analog output. The board is equipped with a Grove connector and communicates via a analog interface. Seeed Studio 101020614
Soil moisture sensor with analog output. The module comes with a probe with metal tips.
Soil moisture sensor with I2C interface. The probe has two pointed tabs, making it easy to insert into the ground. The sensor is supplied with the voltage of 3.3 V or 5 V. SparkFun SEN-17731
Module with a soil moisture sensor for the M5Stack sets. It has an analog output and a digital output with adjustable reaction threshold. M5Stack U019
This soil moisture sensor uses a resistive measurement between two gold-plated probes. Corrosion resistance ensures long life and stable measurements. It works with the micro:bit and Arduino platforms, allowing for reading soil moisture levels as an analog signal. Adafruit 6362
A moisture sensor specially adapted to work with the Kitronik Greenhouse Kit for the BBC micro:bit. It allows monitoring of moisture in the soil. It can be programmed using any editor for the micro:bit. Kitronik 56107
A robust sensor for approximate measurement of nitrogen, phosphorus and potassium (NPK) levels in soil, ideal for precision farming and field applications. With a rugged design (IP68), RS485 MODBUS-RTU communication and a wide power supply range, it allows easy integration with Arduino-type systems and operation in harsh environmental conditions. DFRobot SEN0605