Cellular Dual Temperature Sensor – Battery-Powered, Dual Sensor

The Battery-Powered NB-IoT / LTE-M Dual Temperature Sensor (D22 Cellular Version) is an industrial-grade device designed for long-range, low-power temperature monitoring using Australia’s cellular IoT networks — NB-IoT and Cat-M1 (LTE-M).

Equipped with two independent DS18B20 stainless-steel probes, it delivers precise temperature readings across –55°C to +125°C with ±0.5°C typical accuracy. This dual-probe design makes it perfect for monitoring:

• Hot / cold pipe pairs

• Inlet vs outlet temperatures

• Soil at two depths

• Dual-zone refrigeration

• Compost & waste heat

• Greenhouses & horticulture

• Industrial process equipment

The rugged IP66 outdoor enclosure protects the sensor from dust, rain, moisture, and harsh environmental conditions. Powered by an 8500mAh Li-SOCl₂ long-life battery, the D22 cellular version provides multi-year autonomous operation, making it ideal for remote or hard-to-access sites.

The device uses NB-IoT / LTE-M cellular communication (no LoRaWAN required), offering deep coverage, excellent penetration, and wide-area connectivity across major Australian carriers.

It includes BLE configuration, wireless OTA firmware updates, temperature alarms, and onboard data logging, ensuring no temperature readings are lost during temporary network interruptions.

All ProSense sensors — including this D22 Cellular model — work seamlessly with ProSight Monitoring Software, giving you dashboards, alerts, trends, multi-site monitoring, and reporting.
For integration with third-party systems, the device also supports MQTT, HTTP, and UDP payload formats, making it suitable for custom IoT and SCADA platforms.

ProSense stocks in Australia, offering fast shipping and local technical support.

Key Features

• NB-IoT / LTE-M (Cat-M1) cellular connectivity

• Two DS18B20 stainless-steel waterproof temperature probes

• Temperature range: –55°C to +125°C

• Accuracy: ±0.5°C typical (±2°C max)

• Battery-powered – 8500mAh Li-SOCl₂ for long-life operation

• IP66 weatherproof enclosure

• High/low temperature alarms

• BLE v5.1 configuration

• OTA firmware updates

• Offline data logging (buffer)

• Ultra-low-power architecture

• Compatible with ProSight Software

• Integrates into custom IoT / SCADA systems (MQTT / HTTP / UDP)

• ProSense stocks in Australia with local support

Wireless Connectivity

• NB-IoT (LTE Cat NB2)

• LTE-M (Cat-M1)

• Compatible with: Telstra, Optus, Vodafone

• BLE v5.1 for configuration

• Supports OTA firmware upgrades

• Uplink protocol: MQTT / HTTP / UDP (platform dependent)

Temperature Probes

• 2 × DS18B20 digital stainless-steel probes

• Waterproof, outdoor safe

• Cable length: 1–2m (depending on model)

• Range: –55°C to +125°C

• Accuracy: ±0.5°C typical

Power System

• 8500mAh Li-SOCl₂ industrial battery

• Multi-year operation (interval dependent)

• Ultra-low-power sleep modes

Device Features

• Periodic temperature reporting

• High/low alarm thresholds

• Onboard data logging (offline storage)

• AT command configuration

• BLE mobile app setup

Enclosure & Environment

• IP66 waterproof and dustproof

• UV-resistant industrial enclosure

• Operating range: –20°C to +70°C

Applications

• Dual-zone industrial temperature monitoring

• Soil temperature at two depths

• Compost heat profiling

• Agricultural and horticulture monitoring

• HVAC supply/return temperature

• Water tank / pipeline temperature

• Refrigeration and cold chain

• Environmental research stations

• Industrial plant & equipment monitoring