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

This Solar-Powered Cellular Soil pH & Temperature Sensor delivers high-accuracy soil pH and temperature monitoring using NB-IoT or LTE Cat-M1 networks. It is engineered for farms, orchards, vineyards, and environmental monitoring projects requiring continuous, maintenance-free operation with reliable long-range wireless communication.

The device features a rugged IP68 pH probe with a solid AgCl reference electrode and pure metal pH-sensitive electrode, providing stable and accurate readings over long deployments. The probe is designed for permanent burial and performs consistently in mineral, loamy, clay, and saline-alkali soils.

Powered by a built-in solar panel and rechargeable Li-ion battery, this sensor offers years of autonomous operation—ideal for remote locations where changing batteries is impractical. Data is transmitted via NB-IoT / Cat-M1 using flexible IoT protocols such as MQTT, MQTTs, UDP, and TCP.

Setup is simple using Bluetooth configuration, with support for remote downlink commands and OTA firmware updates. This allows full device management through your cloud platform or ProSight IoT.

ProSense stocks this sensor locally in Australia, ensuring fast delivery and end-to-end technical support for Australian growers and integrators.

General

• Australian Stocked & Locally Supported by ProSense

• Wireless: NB-IoT / LTE Cat-M1

• Power: Integrated solar panel + 3000mAh Li-ion rechargeable battery

• Expected Life: Multi-year continuous operation

• Device Enclosure: IP66 weather-resistant housing

• Probe: IP68 waterproof pH/temperature probe

Soil pH Measurement

• Range: 0–14 pH

• Electrode System:

  • Solid AgCl reference

  • Pure metal pH-sensitive electrode

• High stability, low drift

• Suitable for mineral, loam, clay & saline soils

Soil Temperature Measurement

• Range: –40°C to +85°C

• Resolution: 0.1°C

• Accuracy: ±0.5°C typical

• Used for real-time temperature compensation

Cellular Connectivity

• NB-IoT / LTE Cat-M1

• Supported Protocols:

  • MQTT

  • MQTTs

  • UDP

  • TCP

  • CoAP (depending on firmware)

• Nano SIM card slot

• BLE mobile-app configuration

• Remote downlink control

• OTA firmware update support

Power & Solar System

• Solar Panel: Integrated high-efficiency panel

• Internal Battery: 3000mAh Li-ion rechargeable

• Multi-year outdoor autonomy

• Designed for harsh agricultural environments

Environmental

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

• IP66 enclosure for electronics

• IP68 probe rated for in-soil long-term burial

• UV-resistant housing

Applications

• Smart irrigation systems

• Soil health and nutrient management

• Precision agriculture

• Greenhouses and horticulture

• Viticulture

• Environmental research

What’s Included

• Solar-powered Cellular Soil pH & Temperature Sensor

• IP68 waterproof pH/temperature probe

• External cellular antenna

• Mounting hardware

• Setup and configuration guide