Sanan
SA-HX-120B Vehicle Load Sensor
SA-HX-120B
Vehicle Load Sensor
A durable vehicle-mounted load sensor designed to monitor cargo weight changes in real time and support overload, load balance and transportation management applications.

Smarter Vehicle Load Monitoring
Reliable load sensing for commercial vehicles, transportation management and overload control.

Designed for Real-Time Cargo Load Detection
The SA-HX-120B uses angle measurement theory to detect changes in vehicle load. When cargo weight changes, the leaf spring deforms and displaces. The sensor converts this displacement into corresponding weight data for real-time load monitoring.
- Detect empty, full and overloaded conditions
- Monitor accurate cargo weight values
- Designed for direct vehicle mounting
- Supports integration with GPS and cloud platforms
- Suitable for single or multiple sensor deployment
Built for Commercial Vehicle Operations
A rugged sensing solution designed for demanding transportation environments.
Real-Time Load Detection
Detect empty load, full load, overload and cargo weight changes in real time.
±2% Full Scale Accuracy
Provides measurement accuracy of ±2% Full Scale for vehicle load monitoring.
Rugged Vehicle Design
Special vehicle mounting structure provides anti-damage performance.
High Vibration Resistance
Designed to withstand 5G vibration at 40Hz for demanding vehicle environments.
IP67 Protection
Oil and stain resistant housing with IP67 ingress protection.
Easy Installation
Matched mounting brackets enable fast installation and simple calibration.
From Suspension Movement to Load Data
The sensor measures leaf spring displacement caused by changes in vehicle cargo weight.
Cargo Changes
Vehicle cargo weight changes during loading and transportation.
Leaf Spring Movement
The vehicle leaf spring produces deformation and displacement.
Angle Measurement
The sensor measures the corresponding mechanical movement.
Load Data
Displacement is converted into corresponding vehicle weight data.
Vehicle Load Monitoring Applications
Designed for transportation, sanitation, construction and commercial vehicle management.
Source Overload Control
Real-time vehicle load detection with overload alarm capability.
Muck Truck Management
Support transport trip counting and operational management.
Garbage Truck Supervision
Help control overload, garbage scattering and illegal dumping.
Cargo Balance Warning
Sensors installed on both sides can detect uneven cargo distribution.
Quality Dispute Prevention
Reduce disputes related to vehicle damage caused by overloading.
Property Protection
Help prevent cargo loss and unauthorized private hauling.
Connect Vehicle Load Data to Your Platform
SA-HX-120B can work with positioning, onboard terminals and cloud operation platforms.
SA-HX-120B Technical Specifications
| Model | SA-HX-120B |
| Power Supply | DC 9–32 V |
| Output Signal | 0.5–4.5V / CAN / RS485 |
| Accuracy | ±2% Full Scale (F.S.) |
| Measuring Angle Range | 0–120° |
| Housing Material | PA66 + 35% Glass Fiber (GF35) |
| Ingress Protection | IP67 |
| Operating Temperature | -40°C to +70°C |
| Storage Temperature | -40°C to +80°C |

Designed for Vehicle Suspension Installation
- The recommended mounting position is indicated by the installation drawing.
- Confirm the mounting positions for both the sensor backboard and bottom L-shaped bracket.
- Fixing can be completed by welding or bolt fastening.
- After installation, reserve more than 20 cm of vertical movement clearance for upward swing of the swing arm.
A Practical Sensor for Vehicle Fleet Monitoring
Combine vehicle load sensing with your existing fleet monitoring architecture.
Vehicle-Focused Design
Structural design and installation method are developed specifically for vehicle applications.
Multiple Interfaces
0.5–4.5V, CAN and RS485 outputs provide flexible integration options.
Fleet Platform Integration
Load data can be combined with GPS, onboard terminals and cloud platforms.
Build a Smarter Vehicle Load Monitoring System
Looking for vehicle load sensors for trucks, garbage trucks, muck trucks or fleet management? Contact SANAN for product information and integration support.