The Probe IO with Soil pH Sensor (RK500-22AB5000) RAK2560 is the perfect solution for adding soil pH monitoring via RS485 to your RAK Sensor Hub deployment.
This soil pH sensor RS485 solution delivers accurate, real-time readings, helping you monitor soil health for smart farming, greenhouse automation, and precision irrigation.
Key Features & Benefits:
Soil pH Sensor RS485 Connectivity: Reliable, high-accuracy soil pH measurement with robust wired communication
Multi-Protocol Support: RS-485, SDI-12, 4–20 mA, and DI/DO – connect RAK or third-party sensors
Weatherproof IP67 Design: Suitable for indoor or outdoor use
WisToolBox Compatible: Configure and monitor with ease
Expandable: Use splitter cables to connect multiple Probe IOs to one Sensor Hub port
Flexible Positioning: Extend cable length with Sensor Hub Extension Cables
📌 Important Notes:
Requires RAK2560 Sensor Hub (cannot operate as a standalone device)
Must be powered via the included power supply – not battery compatible
Sensor Hub NB-IoT variant supports both CAT-M1 and CAT-NB2 for flexible network coverage
This RS485 soil pH sensor setup is ideal for precision agriculture, soil research, and environmental monitoring projects where consistent, long-term pH data is critical.
Probe IO – Soil pH Sensor (RK500-22AB5000 RS485) RAK2560
The RAK2560 Probe IO with Soil pH Sensor (RK500-22AB5000) connects directly to the RAK Sensor Hub to provide accurate, real-time soil pH monitoring over RS485.
It is IP67-rated, weatherproof, and supports multiple protocols, making it ideal for outdoor agricultural and environmental monitoring.
- Support one RS-485 device*
- Support one SDI-12 device*
- Support one 4-20 mA device*
- Support two DO (dry contact)*
- Support one DI*
- One-wire protocol*
- Supply 5V / VIN / 24V (1A) power.
- Waterproof (IP67-rated for the probe body)


















