CET-SJ402T 4-Channel Vehicle Detector for Weigh-in-Motion Systems with 350m Loop Support and RS-485 Communication

The CET-SJ402T is a four-channel inductive loop vehicle detector engineered for precision weigh-in-motion systems and bridge health monitoring applications. Built with industrial-grade components, this detector delivers reliable real-time vehicle detection with exceptional accuracy and long-term stability for intelligent transportation infrastructure.

• Four Independent Channels: Supports multi-lane weigh-in-motion detection with zero crosstalk between channels
• High-Speed Processing: Industrial-grade microprocessors with watchdog reset circuits ensure reliable performance
• Flexible Configuration: DIP switch setup for sensitivity, frequency, logic output, and serial communication (RS-485/RS-232)
• Environmental Adaptability: Automatic temperature and loop drift compensation for outdoor and bridge monitoring applications
• Extended Range: Supports loop feeders up to 350 meters in length
• Multiple Outputs: 4 optically isolated outputs with selectable logic modes

The SJ402T serves as the core detection component for weigh-in-motion solutions, providing accurate vehicle presence and direction detection via inductive loops. This enables precise timing for axle load calculation, weight enforcement, traffic analytics, and bridge health monitoring systems.

Designed for seamless integration with existing weigh-in-motion control systems, data loggers, loop sensors, and enforcement systems. The CET-SJ402T features frequency tuning and sync mode to prevent interference and ensure reliable operation in demanding transportation environments.