---
lang: "en"
title: "Nitrogen (N), Phosphorus (P) and Potassium (K) MODBUS RS485 Sensor"
canonical_url: "https://shop.marcomweb.it/en/lorawan-agriculture/nitrogen-n-phosphorus-p-and-potassium-k-modbus-rs485-sensor"
brand: "MARCOM S.r.l."
---

## Available variants

---
title: "Nitrogen (N), Phosphorus (P) and Potassium (K) MODBUS RS485 Sensor — Variant: Nitrogen (N), phosphorus (P), and potassium (K) MODBUS RS485 sensor"
sku: "SN-3002-TR-NPK-N01"
canonical_url: "https://shop.marcomweb.it/en/lorawan-agriculture/nitrogen-n-phosphorus-p-and-potassium-k-modbus-rs485-sensor?config=2437"
brand: "MARCOM S.r.l."
end_of_life: "false"
---

---
title: "Nitrogen (N), Phosphorus (P) and Potassium (K) MODBUS RS485 Sensor — Variant: Nitrogen (N), phosphorus (P), and potassium (K) LoRaWAN sensor"
sku: "SN-3002-TR-NPK-N01-L"
canonical_url: "https://shop.marcomweb.it/en/lorawan-agriculture/nitrogen-n-phosphorus-p-and-potassium-k-modbus-rs485-sensor?config=2438"
brand: "MARCOM S.r.l."
end_of_life: "false"
---

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SN-3002-TR-NPK-N01:Nitrogen (N), Phosphorus (P) and Potassium (K) MODBUS RS485 Sensor. (LoRaWAN option available)

The SN-3002-TR-NPK-N01 Soil NPK sensor is a high-precision device designed to accurately measure nitrogen (N), phosphorus (P), and potassium (K) levels in soil. With an IP68 waterproof rating and a stainless steel probe, it is perfect for outdoor agricultural and environmental monitoring.

This sensor offers a wide detection range of 1-1999 mg/kg and provides data via the RS485 Modbus protocol, ensuring compatibility with modern data logging systems. Its fast response times, robust construction, and customizable cable length make it an excellent choice for professional soil analysis and monitoring.

## Technical Specifications

- Power supply: DC 5-30V
- Maximum power consumption: ≤0.15W (@12V DC, 25℃)
- Operating temperature: 0℃ to 55℃
- NPK measurement range: 1-1999 mg/kg (mg/L)
- Resolution: 1 mg/kg (mg/L)
- Accuracy: ±2% FS
- Response time: <1 second
- Protection class: IP68
- Probe material: Stainless steel
- Sealing material: Flame-retardant black epoxy resin
- Cable length: 2 meters (customizable)
- Dimensions: 45 x 15 x 123 mm
- Output signal: RS485 (Modbus protocol)

---

Source: https://shop.marcomweb.it/en/lorawan-agriculture/nitrogen-n-phosphorus-p-and-potassium-k-modbus-rs485-sensor

MARCOM S.r.l. — a trusted supplier for industrial automation and building automation.