Client Background
The client is a logistics service provider specializing in the transportation of fresh food and pharmaceutical products.
Due to strict requirements for temperature control, location traceability, and regulatory compliance, the client needed a reliable way to monitor transportation conditions throughout the entire delivery process.
As business volume increased, traditional manual logging and post-transport inspections were no longer sufficient, resulting in delayed issue detection, higher cargo loss risk, and increased operational pressure.
What are the key challenges?
1.Inability to monitor temperature conditions in real time during transportation
2.Limited visibility into shipment location and transportation routes
3.Insufficient device battery life for long-duration transport scenarios
4.Inefficient data recording and report generation processes
5.Difficulty meeting cold chain compliance and audit requirements
Solution Overview
We developed the portable 4G GPS temperature logger, low-power cold chain monitoring device that integrates location tracking, temperature sensing, real-time communication, and local data reporting.
The solution enables full visibility into transportation conditions and provides reliable, verifiable data for operational management and compliance purposes.
PCB Design
Product Capabilities
Ultra-Low Power Design
Optimized low-power system architecture
Up to 7 days of continuous operation under normal working conditions
Up to 18 months of standby time, supporting long transport and storage cycles
Dual-Mode Satellite Positioning
Supports GPS + BeiDou positioning
Accurately records shipment routes and key location points
Enables full traceability and responsibility tracking
4G Cellular Connectivity
Built-in 4G communication module
Temperature and location data transmitted to the backend platform in real time
Supports continuous monitoring and anomaly detection
High-Precision Temperature Measurement
Integrated high-accuracy temperature sensing circuitry
Continuous and reliable data acquisition
Ensures data integrity for cold chain management
Local Report Generation
Automatically generates reports directly on the device after data logging
Supports both PDF and TXT report formats
No additional software required
Bluetooth Printing
Supports connection to Bluetooth printers
Enables on-site printing of transportation reports
Suitable for field operations and documentation handover
USB Flash Drive Data Export
Supports direct data export via USB flash drive
Report files can be copied instantly without backend configuration
Simple operation with minimal technical dependency
Interactive Human–Machine Interface
User-friendly interactive interface
Designed for ease of use by frontline operators
Reduces training time and operational errors
Project Results
By deploying this solution, the client achieved:
Real-time visibility into temperature and location throughout transportation
Early detection of temperature deviations, reducing cargo loss
Complete and traceable transportation data records
Automated report generation and simplified data handover
Improved operational efficiency and compliance readiness
Business Value
Risk Mitigation – Shifts cold chain management from post-event review to in-process control
Compliance Assurance – Provides standardized, verifiable data for audits and regulatory reviews
Operational Efficiency – Reduces manual workload and process complexity
System Reliability – Ultra-low power design ensures long-term stable operation
Summary
This 4G GPS temperature logger enabled the client to establish a reliable and scalable cold chain monitoring system, supporting both operational control and regulatory compliance for fresh food and pharmaceutical transportation.
