An intelligent monitoring terminal designed for refrigerated containers, integrating satellite positioning, 4G global communication, satellite communication (optional), Bluetooth configuration, and reefer data collection — keeping every container online and visible at all times.
Boxlog Reefer Controller (CONTAINER GUARD) is a next-gen intelligent monitoring terminal for refrigerated containers, developed by Shenzhen ucontainers Technology Co., Ltd.
Supports GPS/BDS satellite positioning + LBS base station assisted positioning, accuracy <10m. Auto-switches to cellular in satellite blind spots for full traceability.
4G global network standard supporting 400MHz LEO satellite band. Data sent to cloud in real-time via MQTT for stable global connectivity.
Real-time collection of reefer parameters: set temp, supply air, return air, operating status. Supports remote temp setting and control commands.
Built-in accelerometer auto-detects motion/stationary status, dynamically adjusts collection and reporting frequency. Supports collision and door opening detection.
Standby current <6μA, powered directly by AC/DC 24V reefer. High-strength PC+ABS enclosure, -20℃~+60℃ range, 5+ year lifespan.
Supports Bluetooth 5.1. Activate device, bind container, set reporting frequency via mobile app. Supports remote OTA firmware updates.
| Product Name | Reefer Controller / CONTAINER GUARD |
| Dimensions | 182mm (L) × 80mm (W) × 37mm (H) |
| Operating Voltage | AC/DC 24V (Powered by Reefer) |
| Standby Current | < 6μA |
| Positioning | GPS/BDS + LBS Base Station |
| Accuracy | < 10m |
| Network Standard | 4G Global + 400MHz LEO Satellite |
| Protocol | MQTT |
| Sensors | Accelerometer, Temperature Sensor |
| Collection Interval | Configurable [10, 10080] min/interval |
| Bluetooth | Bluetooth 5.1 |
| Operating Temp | -20℃ ~ +60℃ |
| Service Life | > 5 years |
| Enclosure | High-strength PC+ABS |
| LED Indicators | POWER Red (solid), DATA Green (solid when communicating) |
From data collection to remote control, Boxlog provides a complete capability matrix for full lifecycle reefer management.
Periodic GPS/BDS location collection. Auto-switches frequency between motion and stationary states to save data and power.
Real-time reading of set temp, supply air, return air, unit status, fault codes and other operational data.
Send temp setting commands remotely via cloud platform or WeChat mini-program. Supports command execution confirmation.
Configurable collection interval from 10 to 10080 minutes for different transport data granularity needs.
Accelerometer detects motion/stationary status — high-frequency in transit, auto-reduction during storage. Intelligent balance of accuracy and power.
Real-time monitoring of reefer power supply and device battery voltage. Active alerts for abnormal power conditions.
Built-in temp sensor independent of the reefer system monitors container ambient temperature for dual cargo protection.
Supports Bluetooth 5.1. Device activation, container binding, reporting settings, and reset via mobile app.
Receives firmware upgrade packages pushed by the platform via MQTT. Updates and fixes without on-site operation.
Temperature deviation, door opening, device offline, low battery events pushed via SMS, WeChat, and platform messages.
Boxlog supports major reefer brands including Carrier, Daikin, Thermo King and other common models.
Standardized installation process — deploy in 30 minutes, ready to use immediately.
Turn off reefer power. Prepare screwdriver, cutters, socket wrench. Remove device, antenna and mounting accessories.
Select recommended position per reefer model. Secure device to panel inside reefer control box with self-tapping screws.
Connect cables to reefer adapter board. Insert 3PIN power and 7PIN communication connectors. Install antenna at recommended position.
Turn on reefer power. Confirm POWER LED (red) solid and DATA LED (green) solid — installation successful.
Boxlog devices integrate with the ucontainers platform, providing a web console and WeChat mini-program for full-chain container visibility.
AMap/Baidu dual engine, real-time location display and track playback. Supports WGS-84, GCJ-02, BD-09 coordinate conversion.
Temperature curves, runtime, mileage stats, anomaly events visualization. Supports custom period data export.
Multi-type alerts: temp exceedance, offline, door open, low battery. Push via SMS, WeChat, and platform messages.
Search "智箱云网" on WeChat. Check container location, temp, and status on phone. Receive real-time alerts.
Standardized APIs push device data to customer systems (ERP/TMS/WMS) for seamless business integration.
Platform supports 7 languages: Chinese, English, Japanese, Korean, Thai, Vietnamese, Arabic — serving global customers.
| Reefer Controller Main Unit | 1 unit |
| Antenna | 1 piece |
| Self-tapping Screws | 4 pcs |
| Adhesive Aid | 1 tube |
| Extension Accessories (Power/Data Cable) | Optional (depends on reefer model) |
Boxlog Reefer Controller — ucontainers' next-gen smart container monitoring terminal. Open for collaboration.
Visit ucontainers Platform