Wireless Temperature Sensor & IoT Data Logger (Cut the Cord)
In the era of Industry 4.0, traditional cabling is becoming the biggest bottleneck for factory upgrades. The Hongtai Wireless Temperature Sensor series (HT-IoT) is designed to revolutionize how you monitor thermal assets. By eliminating the need for expensive conduit, cable trays, and electrician labor, our Remote temperature monitoring system allows you to deploy a complete sensing network in minutes, not weeks.
Whether you are managing a pharmaceutical cold storage facility, a sprawling agricultural greenhouse, or a fleet of refrigerated trucks, this WiFi data logger acts as your 24/7 automated watchman. It replaces the legacy Temperature transmitter 4-20mA with a smart, battery-powered solution that uploads data directly to the cloud, ensuring you never miss a critical temperature excursion again.
1. The “Cut the Cord” Advantage: ROI Analysis
Why switch from wired to wireless? The cost savings are immediate. Installing a traditional wired sensor involves drilling walls, running shielded cables, and integrating with a PLC.
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Wired Cost: Cable ($2/m) + Conduit ($5/m) + Installation Labor ($50/hour) = High Capital Expenditure.
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Wireless Cost: One Wireless temperature sensor + Magnetic Mount = 80% Savings on installation.
2. Connectivity Options: WiFi, 4G, and LoRaWAN
We understand that every site is different. That’s why our Remote temperature monitoring system offers three distinct transmission protocols to suit your specific environment:
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WiFi Edition: Best for factories and warehouses with existing IT infrastructure. It connects directly to your local router, costing zero in data fees.
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4G LTE / NB-IoT Edition: The ultimate solution for mobile assets like refrigerated trucks or remote outdoor locations (e.g., oil pipelines) where WiFi is unavailable. It uses a SIM card to upload data via cellular networks.
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LoRaWAN Edition: Ideal for agriculture or massive campuses. One gateway can cover kilometers of range, connecting hundreds of low-power sensors penetrating through concrete walls.
3. Compatible Probes: From DS18B20 to PT100
The HT-IoT logger is a versatile transmitter base that works with various external probes:
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Waterproof DS18B20 probe: The most cost-effective solution for Cold Chain (-55°C to +125°C). It is digital, pre-calibrated, and fully waterproof (IP68), making it perfect for freezers and soil monitoring.
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PT100 / PT1000 RTD: For industrial precision requiring Class A accuracy (-200°C to +500°C).
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Type K Thermocouple: For high-temperature ovens and furnaces up to 1200°C.
4. Cloud Dashboard & Real-Time Alerts
Hardware is only half the story. The power of a WiFi data logger lies in the software. Our sensors connect seamlessly to the Hongtai Cloud Platform (or your own server via API/MQTT).
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Real-Time Visualization: View live temperature curves on your phone or PC dashboard.
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Smart Alarms: Set high/low thresholds. If the temperature spikes (e.g., a freezer door is left open), the system instantly sends an SMS, Email, or App Push Notification to the facility manager.
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Compliance Reports: Automatically generate PDF/CSV data reports for HACCP or GMP audits without manual clipboard recording.
5. Technical Specifications
| Parameter | Specification | Notes |
| Product Name | Wireless temperature sensor / Data Logger | Wall Mount or Magnet |
| Communication | WiFi (2.4GHz), 4G LTE, LoRaWAN, NB-IoT | Selectable |
| Sensor Input | Waterproof DS18B20 probe (Digital) | PT100 / Type K optional |
| Power Supply | Built-in 5000mAh Lithium Battery | USB-C Charging supported |
| Battery Life | 1 to 3 Years | Depends on upload interval |
| Data Storage | 100,000 Points (On-board memory) | Uploads when online |
| Accuracy | ±0.5°C (DS18B20) / ±0.1% (PT100) | – |
| Protection | IP65 Waterproof Enclosure | Suitable for Outdoors |
| Temperature Range | -55°C to +125°C (Standard Probe) | -200°C to 1200°C (Ext Probe) |
6. Frequently Asked Questions (FAQ)
Q: What happens if the WiFi goes down?
A: Data integrity is critical. Our WiFi data logger has a “Breakpoint Resume” function. It will continue to record data to its internal memory (up to 100,000 readings). Once the network is restored, it automatically uploads the missing historical data to the cloud, ensuring no gaps in your records.
Q: Can I integrate this into my existing SCADA system?
A: Yes. While we offer a Cloud platform, we support open protocols like Modbus TCP and MQTT. You can pull the data directly from the sensor into your local PLC or SCADA system for process control.
Q: How long does the battery last?
A: It depends on the “Upload Interval.” If you upload data every minute, it lasts about 6 months. If you upload every hour (standard for cold chain), the battery can last 3 to 5 years.
Ready to upgrade your factory?
Check out our Handheld Thermometers for spot checks, or Contact Us for a demo of our Cloud IoT Platform.
