Cellular Soil pH & Temperature Sensor – Battery Powered NB-IoT / Cat-M1

This Battery-Powered Cellular Soil pH & Temperature Sensor provides precise, continuous monitoring of soil pH and temperature using NB-IoT or Cat-M1 cellular networks. Designed for smart agriculture, soil health assessments, and long-term field research, it delivers real-time insights needed to optimise fertilisation, irrigation, and crop management.

The sensor uses a solid AgCl reference electrode paired with a pure metal pH-sensing electrode, ensuring long-term accuracy and stability even in harsh soil conditions. The robust IP68 waterproof probe is built for permanent in-ground installation and performs reliably across a range of soil types, including mineral soils, loam, clay, and saline-affected farmland.

Data is transmitted via NB-IoT / LTE Cat-M1, supporting modern IoT protocols such as MQTT, MQTTs, UDP, and TCP. With BLE configuration, downlink control, and OTA firmware updates, the device is easy to install, manage, and scale.

Powered by an 8500mAh Li-SOCl₂ battery, this sensor supports several years of autonomous operation—ideal for remote paddocks, orchards, vineyards, and environmental field stations where regular maintenance is not practical.

ProSense stocks this model in Australia and provides full local technical support, ensuring reliable deployment and seamless integration with ProSight or third-party IoT platforms.

General

• Australian Stocked & Locally Supported by ProSense

• Wireless: NB-IoT / LTE Cat-M1

• Power: Built-in 8500mAh Li-SOCl₂ battery

• Expected Life: Multi-year operation (usage dependent)

• Device Enclosure: IP66 rated

• Probe: IP68 waterproof, designed for permanent burial

Soil pH Measurement

• Range: 0–14 pH

• Electrode:

  • Solid AgCl reference

  • Pure metal pH-sensing electrode

• Excellent long-term drift stability

• High reliability in saline and mineral soils

Soil Temperature Measurement

• Range: –40°C to +85°C

• Resolution: 0.1°C

• Accuracy: ±0.5°C typical

• Supports temperature compensation for pH readings

Cellular Connectivity

• NB-IoT / LTE Cat-M1 compatible

• Protocols Supported:

  • MQTT

  • MQTTs

  • UDP

  • TCP

  • CoAP (varies by model)

• SIM Type: Nano SIM (NB-IoT / Cat-M1)

• BLE mobile configuration

• Remote downlink adjustment

• OTA firmware upgrade support

Battery

• Type: Li-SOCl₂ (non-rechargeable)

• Capacity: 8500mAh

• Self-discharge: <1% per year

• Multi-year low-maintenance performance

Environmental

• Operating Temperature: –40°C to +85°C

• Fully sealed corrosion-resistant materials

• Suitable for long-term in-soil deployment

Applications

• Smart irrigation systems

• Precision agriculture

• Soil nutrition & fertiliser optimisation

• Crop yield improvement

• Environmental & scientific research

• Orchards, vineyards, broadacre cropping

What’s Included

• Cellular Soil pH & Temperature Sensor

• IP68 pH/temperature probe

• External cellular antenna

• 8500mAh battery (pre-installed)

• Quick setup guide