FOFN Devices
Dual-SIM Beidou GPS Tracker
The H-S508 is a 4G BeiDou GPS tracker that supports automatic dual-SIM card switching, suitable for fuel monitoring, logistics, fleet management, and construction machinery tracking. The device supports multi-source positioning via BeiDou, GPS, LBS, and Wi-Fi, and can automatically select the carrier network with the most stable signal in complex network environments, thereby enhancing the continuity and reliability of data transmission. The product supports ACC detection, mileage tracking, fuel consumption monitoring, temperature monitoring, speeding alerts, power-off alerts, geofence alerts, and remote OTA updates. It is compatible with various communication protocols, including JT808, and can be expanded via a serial port to connect external devices such as fuel level sensors and temperature sensors.
The H-S508 features a high-specification modular design with built-in dual-SIM communication capability. When the network connection for one SIM card becomes unstable, the device automatically switches to the other SIM card, making it ideal for cross-regional transportation, vehicle management in remote areas, and fleet projects with high requirements for communication stability.
The device supports Beidou + GPS satellite positioning, combined with LBS and Wi-Fi-assisted positioning, to provide real-time location tracking, route playback, and status monitoring for vehicles, construction machinery, and transportation equipment. It features a built-in 200mAh industrial-grade lithium-polymer battery that continues to report power-off events and provides short-term backup power when the vehicle’s power is cut off.
The H-S508 is equipped with serial port expansion capabilities, allowing it to connect to RS232 or RS485 peripherals and support data collection from fuel level sensors, temperature sensors, and other vehicle monitoring devices. When integrated with the FOFN Fleet Management Platform or the customer’s own platform, it enables real-time location tracking, fuel level monitoring, alarm management, and remote device maintenance.
Project Parameters
Product Models
H-S508
Communication Networks
4G Network / Automatic Dual-SIM Switching
Positioning Methods
Beidou + GPS + LBS + WiFi
Operating Voltage
9–90 V DC
Operating Current
Built-in battery
200 mAh / 3.7 V industrial-grade lithium-polymer battery
Operating Temperature
-25°C to +70°C
Storage Temperature
-40°C to +80°C
Product Weight
Approx. 130 g
Product Dimensions
75 × 35 × 15 mm
Positioning Accuracy
Horizontal accuracy: 2.5 m (CEP50)
Serial Port Expansion
RS232 / RS485
Supported Protocols
JT808 and various other protocols
Remote Maintenance
Supports OTA updates
Key capabilities
- Automatic dual-SIM switching enhances network stability
- Supports 4G network-agnostic connectivity
- Beidou + GPS + LBS + Wi-Fi Multi-Mode Positioning
- ACC Status Detection and Mileage Tracking
- Supports fuel level and temperature monitoring
- Supports alerts for speeding, power loss, geofencing, and more
- Supports data retrieval from dead zones to minimize track loss
- Supports RS232/RS485 serial port expansion
- Supports JT808 and other communication protocols
- Supports remote OTA updates and parameter configuration
- Wide voltage input, suitable for a variety of vehicles and equipment